Can someone answer my questions please

Write two paragraphs to explain how the cold war changed after the 1960s. first, identify the ways it changed during leonid brezhnev's leadership in the 1970s. then, explain how the cold war changed when ronald reagan was in office in the early 1980s. include supporting facts and details from the text in your response.

What was the result on the u.s. economy because of the major changes in atlantic shipping prior to and during the war of 1812?

What event did not contribute to the start of ww11