Mexico.
By the mid-1840s, United States expansionism was expressed in terms of "Manifest Destiny". Texas was annexed in 1845, and in May 1846, after a Mexican cavalry detachment attacked a U.S. patrol in disputed territory, Congress declared war on Mexico. After its defeat, Mexico-in the 1848 Treaty of Guadalupe Hidalgo-recognized the boundaries claimed by Texas (including the Rio Grande) and ceded California, Arizona, New Mexico and portions of Utah, Colorado, and Wyoming to the United States.
Russia
The United States, Great Britain, Spain, and Russia claimed the Oregon territory, in other words, the Oregon Country.
The united states
The United States, Great Britain, Spain, and Russia claimed the Oregon territory, in other words, the Oregon Country.
The United States. It extended from various cities on the Missouri River to the Oregon Country and later Oregon Territory. I am assuming your asking about the literal trail and not the game.The United States. It extended from various cities on the Missouri River to the Oregon Country and later Oregon Territory. I am assuming your asking about the literal trail and not the game.The United States. It extended from various cities on the Missouri River to the Oregon Country and later Oregon Territory. I am assuming your asking about the literal trail and not the game.The United States. It extended from various cities on the Missouri River to the Oregon Country and later Oregon Territory. I am assuming your asking about the literal trail and not the game.The United States. It extended from various cities on the Missouri River to the Oregon Country and later Oregon Territory. I am assuming your asking about the literal trail and not the game.The United States. It extended from various cities on the Missouri River to the Oregon Country and later Oregon Territory. I am assuming your asking about the literal trail and not the game.
Oregon is a state, part of the 50 states that make up the United States of America. There is a city in Oregon called Oregon City. There are also cities in various states that are called Oregon, Ohio and Illinois for example. As far as I know there is no country called Oregon.
The United States and Great Britain acquired Oregon country from Spain as the result of the Adams-Onis Treaty. Spain previously had claimed Oregon for 250 years.
In 1803, the United States acquired the Louisiana Territory from France, which included parts of what is now the Pacific Northwest. However, Oregon was primarily claimed by multiple nations, notably Spain, Britain, and the United States. At that time, no single country fully controlled the region, as it was still largely unsettled and its boundaries were disputed. The formal control over Oregon would evolve in the following decades, particularly with the Oregon Treaty of 1846.
Russia Spain Great Britain United States
A free non-slave country united as one.
Oregon Country
Mount Hood is in Oregon, United States.