Spain is one country, who explored southwestern portion of what is now the United States.
The Louisiana Purchase is why part of Louisiana becama part of The Union. The portion of Lousiana directly north of Greater New Orleans was part of the Spanish colony of West Florida. Southwestern Louisiana was the Spanish colony known as the Viceroyalty of New Spain.
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(the Louisiana Purchase)
The Louisiana Purchase was when the US bought some land from France in 1803 that included a large portion of land west of the Mississippi River.
The Louisiana Purchase was intended to remove France's presence from the territories in the entire center portion of the continental United States. The purchase would also insure free passage on the Mississippi River and trade access to the Port of New Orleans.
A tiny portion of the land acquired did cross the Canadian Border, but the vast majority was south of the Canadian Border.
Virtually nothing has been explored. Even if we had our entire solar system well mapped, we would not have any portion of this really giant universe explored. Even the Milky way is a very very tiny portion of this really giant universe!
The University of Wisconsin-Platteville is located in Platteville Wisconsin, in the southwestern portion of Wisconsin.
South Carolina, and Georgia, on the far southwestern portion.
Not all of Morocco is desert. The southwestern portion is, but the northeastern portion has other geographic features. Use the link below to learn more.
there is no answer for that coz only a limited portion of the universe has been explored
The Arkansas River is the river in the northern portion of the Louisiana Territory. The boundary to the north was along the 100th meridian to the Arkansas River, then westward to its source in the Rockies.
At various times Wyoming was claimed by Great Britain, France, Spain, Mexico, and Texas. The portion of Wyoming east of the Continental Divide was claimed by the United States with the Louisiana Purchase in 1803. In the Oregon Treaty of 1846, the portion of the Wyoming Territory west of the continental divide and north of the 42nd parallel was claimed by the United States. The southwestern corner of what became the Wyoming Territory, south of the 42nd parallel, became part of the United States with the 1848 Mexican Cessation.
The southwestern tip of Virginia touches a short portion of Kentucky's eastern border.
The southwestern portion of the Philippines.
The Louisiana territory as acquired in the Louisiana Purchase included land that spanned from Louisana in the south to Montana and North Dakota in the north. It also included a small portion of land from two Canadian provinces: Alberta and Saskatchewan. The territory north of the 49th parallel was ceded to the British in 1818.
Louisiana and the southern portion of Arkansas
The Lewis and Clark expedition were dispatched primarily to the western portion of the United States. The expedition was commissioned by President Thomas Jefferson shortly after the Louisiana Purchase in 1803.
France owned a large portion of North America. However, being that France was also at war with the British, they needed money. As such, they sold the land to the United States.