Answer:
Flat major i hope this helps
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!
“Julius and Ethel Rosenberg are convicted of espionage for their role in passing atomic secrets to the Soviets during and after World War II.” They were also executed in the same electrical chair in 1953. (I could find what their fate was sorry.)