{"id":2664,"date":"2016-11-27T01:53:59","date_gmt":"2016-11-27T01:53:59","guid":{"rendered":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/?p=2664"},"modified":"2026-02-21T03:13:52","modified_gmt":"2026-02-21T03:13:52","slug":"causes-of-the-black-death","status":"publish","type":"post","link":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/causes-of-the-black-death\/","title":{"rendered":"Causes of the Black Death: A Detailed Summary"},"content":{"rendered":"\n<p>There were several main causes of the <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/black-death-overview\/\" data-type=\"post\" data-id=\"2661\">Black Death<\/a>, as identified by historians. Further, the &#8216;Black Death&#8217; is the term that historians use to describe the <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/where-and-how-did-the-plague-spread\/\" data-type=\"post\" data-id=\"2681\">spread of the bubonic plague<\/a>.\u00a0 It is one of the most significant events of the <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/category\/middle-ages\/\" data-type=\"category\" data-id=\"46\">Middle Ages<\/a> and had a profound impact on life for people of the time.\u00a0 In studying the history and significance of the Black Death historians have identified several key causes, including: rats, trade networks such as the <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/silk-road\/\" data-type=\"post\" data-id=\"2489\">Silk Road<\/a>, warfare such as the\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/crusades-overview\/\" data-type=\"post\" data-id=\"2603\">crusades<\/a>, poor hygiene and a lack of medical understanding.<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">CAUSES OF THE BLACK DEATH &#8211; TRADE ROUTES (SILK ROAD)<\/h2>\n\n\n\n<p>It is believed that the plague first began in Central Asia and spread to Europe through vast trade routes such as the\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/silk-road\/\" data-type=\"post\" data-id=\"2489\">Silk Road<\/a>.\u00a0 Historians studying the spread of the plague discovered that the disease was spread by fleas that are commonly found on rodents such as rats and mice.\u00a0 As such, it is now understood that the plague spread via trade routes as the rodents travelled in caravans and on merchant ships.\u00a0 For instance, the first example of the plague arriving in Europe dates from 1347 when a Genoese merchant ship arrived in Sicily.\u00a0 The merchants on the ship were suffering from the <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/symptoms-of-the-bubonic-plague\/\" data-type=\"post\" data-id=\"2678\">effects of the plague<\/a>, which included: flu-like symptoms, black and painful lumps that oozed blood and pus, and vomiting.\u00a0 The traders had just returned from a port city on the Crimean Peninsula in the Black Sea.\u00a0 While there they had encountered Mongol raiders which they supposedly received the disease from.\u00a0 Therefore, Silk Road led to the spread of the plague because it allowed the infected rats to easily travel vast distances and come into contact with all sorts of new populations of people.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2025\/11\/Silk-Road-Map-1024x576.png\" alt=\"Silk Road Map\" class=\"wp-image-4403\" srcset=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2025\/11\/Silk-Road-Map-1024x576.png 1024w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2025\/11\/Silk-Road-Map-300x169.png 300w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2025\/11\/Silk-Road-Map-768x432.png 768w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2025\/11\/Silk-Road-Map.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Silk Road Map by History Crunch<\/figcaption><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">CAUSES OF THE BLACK DEATH &#8211; WARFARE<\/h2>\n\n\n\n<p>Similar to the Silk Road, warfare in the\u00a0Middle Ages\u00a0helped contribute to the spread of the plague.\u00a0 For example, the <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/crusades-overview\/\" data-type=\"post\" data-id=\"2603\">crusades<\/a> occurred in the centuries leading up to the start of the Black Death and set the stage for increased interaction between Europe and the Middle Eastern civilizations.\u00a0 The crusades, which began in the 11th century were a series of missions carried out by Christian crusaders from Europe to recapture the <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/holy-land-in-the-crusades\/\" data-type=\"post\" data-id=\"2639\">Holy Land<\/a> in the Middle East which was controlled by Muslims.\u00a0 Ultimately, the crusades caused an exchange of people between Europe and Asia which allowed for the easier transport of the plague and infected rats.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Black-Death-1024x576.jpg\" alt=\"Black Death\" class=\"wp-image-5504\" srcset=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Black-Death-1024x576.jpg 1024w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Black-Death-300x169.jpg 300w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Black-Death-768x432.jpg 768w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Black-Death.jpg 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">&#8216;The Triumph of Death&#8217; by Pieter Bruegel. (1562)<\/figcaption><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">CAUSES OF THE BLACK DEATH &#8211; POOR HYGIENE <\/h2>\n\n\n\n<p>The death tolls of the Black Death were massive, with as much as 50% of the population dying due to the plague.&nbsp; Several factors contributed to the spread of the plague and the overall Black Death.&nbsp; First, hygiene played a crucial role in the spread of the disease.&nbsp; Europe in the Middle Ages lacked the modern conveniences of sanitation and running water.&nbsp; Instead, human filth was often just dumped in the street.&nbsp; This situation caused rodents such as rats and mice to flourish which helped spread the fleas that carried the plague with them.&nbsp; As such, crowded cities and towns were often havens for the plague since it attracted rodents that were drawn to human activity.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Where-and-How-Did-the-Plague-Spread-1024x576.jpg\" alt=\"Where and How Did the Plague Spread\" class=\"wp-image-5506\" srcset=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Where-and-How-Did-the-Plague-Spread-1024x576.jpg 1024w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Where-and-How-Did-the-Plague-Spread-300x169.jpg 300w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Where-and-How-Did-the-Plague-Spread-768x432.jpg 768w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Where-and-How-Did-the-Plague-Spread.jpg 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">The bubonic plague was spread when infected fleas from rodents bit human beings.<\/figcaption><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">CAUSES OF THE BLACK DEATH &#8211; LACK OF MEDICAL UNDERSTANDING<\/h2>\n\n\n\n<p>The second factor that caused the plague to lead to such high death tolls was the lack of understanding of the disease on the part of Europeans and doctors.&nbsp; At the time, there was little understanding of the connection between hygiene and disease.&nbsp; As a result, there were several different theories on the cause and spread of the diseases, which were all ultimately incorrect.&nbsp; For example, during the Middle Ages, many medical doctors believed that human health was related to the movement of the planets in our solar system.&nbsp; As such, many related the spread of the plague to the rotation of the planets including Mars and Jupiter.&nbsp; Another common belief about the plague was that it was spread by certain ethnic groups.&nbsp; For example, immigrant groups and Jewish people were often blamed for the spread of the disease and were persecuted as a result.&nbsp; Next, some believed that the plague was a result of God\u2019s will and was punishment for the actions of people.&nbsp; As such, many people turned to their faith during the crisis.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Black-Death-Doctor-1024x576.jpg\" alt=\"Black Death Doctor\" class=\"wp-image-5502\" srcset=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Black-Death-Doctor-1024x576.jpg 1024w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Black-Death-Doctor-300x169.jpg 300w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Black-Death-Doctor-768x432.jpg 768w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/02\/Black-Death-Doctor.jpg 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">A plague doctor wore very characteristic clothes during outbreaks of the plague. (1656)<\/figcaption><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>In all, the Black Death was an important event that fundamentally changed life for people across Europe and Asia.&nbsp; It was caused by the spread of the bubonic plague and caused massive death tolls wherever it occurred.&nbsp; It is remembered today as one of the most important pandemics in all of human history and for its role in other major events and time periods, such as: the Silk Road, the Middle Ages and the&nbsp;Renaissance.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The main causes of the Black Death centered on poor hygiene, overcrowded cities, and limited medical knowledge at the time. The plague traveled along major trade routes, especially the Silk Road and merchant ships, allowing it to spread rapidly across Asia, the Middle East, and Europe. This article details the main causes of the Black Death.<\/p>\n","protected":false},"author":1,"featured_media":5505,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":31,"footnotes":""},"categories":[46,42,43],"tags":[85,84,15,83],"class_list":["post-2664","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-middle-ages","category-black-death","category-crusades","tag-black-death","tag-crusades","tag-history","tag-middle-ages"],"_links":{"self":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts\/2664","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/comments?post=2664"}],"version-history":[{"count":5,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts\/2664\/revisions"}],"predecessor-version":[{"id":5520,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts\/2664\/revisions\/5520"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/media\/5505"}],"wp:attachment":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/media?parent=2664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/categories?post=2664"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/tags?post=2664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}