The Transcontinental Railroad, completed in 1869, was a monumental engineering feat that connected the eastern and western United States, revolutionizing transportation and commerce across the country. It was an important aspect of industrialization in the United States.
The Mexican-American War was a conflict fought between the United States and Mexico from 1846 to 1848 that resulted in the United States acquiring more than 500,000 square miles of Mexican territory. This article details the history and significance of the Mexican-American War.
The Louisiana Purchase was the acquisition of approximately 828,000 square miles of territory from France by the United States in 1803, doubling the size of the country and opening the American interior to westward expansion. This article details the history and significance of the Louisiana Purchase.
The Lewis and Clark Expedition was a two-year journey from 1804 to 1806 in which Meriwether Lewis and William Clark led a team of explorers across the American continent to the Pacific Ocean. This article details the history and significance of the Lewis and Clark Expedition.
The Trail of Tears was the forced relocation of Native Americans from their southeastern homelands to territory west of the Mississippi River during the 1830s, resulting in the deaths of thousands. This article details the history and significance of the Trail of Tears.
The Indian Removal Act was a law signed by President Andrew Jackson in 1830 that led to the forced removal of tens of thousands of Native Americans from their ancestral lands east of the Mississippi River. This article details the history and significance of the Indian Removal Act.
Manifest Destiny was the belief that the United States was destined by God to expand its territory across North America, shaping American politics and westward expansion throughout the 1800s. This article details the history and significance of the concept of Manifest Destiny.