Before Polk, the United States and Mexico had boundaries along the Rio Grande River. Texas and Polk claimed that America's southern border ran down to the river south of the United States' positon back then. They had a war, but Mexico lost and U.S kept expanding.
Hope this helps!
George Washington( the first president) was born In Westmoreland country, Virginia so A. Hope this helped :D
I think its the roman empire ...
B. Government power is split between a President and Congress
