How long can you be prediant

Which of the following inventions most directly allowed ancient farmers to produce a surplus ?

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 form of government is powers of states?