After French assistance helped the Continental Army force the British surrender at Yorktown, Virginia, in 1781, the Americans had effectively won their independence, though fighting would not formally end until 1783.
I just copied off my notes so i hope this helps
<span>Prior to the Mexican American war president Polk sent John Slidell to Mexico to negotiate an agreement between that the Rio Grande River would be the southern border of Texas. ... The United States annexed the territory of California in 1848 following its victory in the Mexican-American War.</span>
Answer:
Paleolithic humans originated in one continent and then spread to many parts of the world
Explanation:
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The answer for this usa test prep video is Union Pacific
