When did the United States own all the lands from Atlantic Ocean to Pacific Ocean?
The United States acquired lands from the Atlantic Ocean to the Pacific Ocean gradually through various historical events and negotiations. This expansion is often referred to as "Manifest Destiny."
To determine when the United States owned all the lands from the Atlantic to the Pacific, we need to look into the history of U.S. territorial acquisitions. Here's a step-by-step breakdown:
1. Original Thirteen Colonies: The United States began as thirteen British colonies along the eastern seaboard. These colonies declared independence and formed the United States of America in 1776.
2. Louisiana Purchase (1803): In 1803, the United States acquired a vast territory from France, known as the Louisiana Purchase. This included land stretching from the Mississippi River to the Rocky Mountains, giving the U.S. a significant portion of the landmass between the Mississippi River and the Pacific Ocean.
3. Treaty of 1818: The United States and Britain agreed to jointly occupy the Oregon Country (present-day Oregon, Washington, Idaho, and parts of Montana and Wyoming) in the Treaty of 1818.
4. Adams-Onís Treaty (1819): The United States acquired Florida from Spain through the Adams-Onís Treaty in 1819. This extended the U.S. territory along the southeastern coast.
5. Texas Annexation (1845): Texas was an independent republic after gaining independence from Mexico in 1836. It was annexed by the United States in 1845, adding an extensive area to the southwest.
6. Oregon Treaty (1846): The Oregon Treaty was signed between the United States and Britain in 1846, establishing the international border between the present-day states of Oregon and Washington, along the 49th parallel.
7. Treaty of Guadalupe Hidalgo (1848): After the Mexican-American War, the United States acquired a significant portion of land from Mexico in the Treaty of Guadalupe Hidalgo. This included present-day California, Nevada, Utah, Arizona, New Mexico, parts of Colorado, and Wyoming.
By the end of the Treaty of Guadalupe Hidalgo in 1848, the United States had acquired most of the land from the Atlantic to the Pacific, with the exception of some areas later acquired through the Gadsden Purchase in 1853.
Therefore, you can say the United States owned all the lands from the Atlantic Ocean to the Pacific Ocean after the Treaty of Guadalupe Hidalgo in 1848.