Expansion by Annexation and Treaty: Texas and Oregon
In Grade 8 US history, students learn how the United States expanded westward through annexation and treaty in the 1840s. President James K. Polk won the 1844 election on a platform of expansion, leading to the annexation of Texas in 1845 and the Oregon Treaty with Britain in 1846. These territorial acquisitions significantly increased US territory and heightened tensions with Mexico. This topic is covered in History Alive! The United States Through Industrialism, Chapter 5: An Expanding Nation.
Key Concepts
The idea of expansion dominated the election of 1844. James K. Polk , a surprise candidate, won the presidency by promising to make the United States bigger. Americans saw his victory as a clear signal to claim more territory in the West.
Following through on this promise, Congress annexed Texas as a new state in 1845. This action greatly angered Mexico, which still considered Texas its own territory, and brought the two nations to the brink of war.
Common Questions
How did the United States annex Texas?
In 1845, Congress voted to annex Texas as a new state after James K. Polk won the presidency on a platform of expansion. This angered Mexico, which still claimed Texas as its territory.
What was the Oregon Treaty and what did it accomplish?
The Oregon Treaty of 1846 was an agreement between the United States and Britain that divided the Oregon Territory. It gave the US control of the land south of the 49th parallel, adding what became Oregon, Washington, and Idaho.
Why was James K. Polk important to US westward expansion?
James K. Polk won the 1844 election promising to expand US territory. He followed through by annexing Texas and negotiating the Oregon Treaty, significantly increasing the size of the United States.
Which textbook covers Texas and Oregon expansion in Grade 8?
History Alive! The United States Through Industrialism, Chapter 5: An Expanding Nation, covers the annexation of Texas and the Oregon Treaty.
Why did the annexation of Texas lead to conflict with Mexico?
Mexico had not recognized Texas independence after it broke away in 1836. When the US annexed Texas in 1845, Mexico viewed it as an act of aggression, leading directly to the Mexican-American War.