How was it like living in a motte and Bailey castle

Ineed answers 5 and 6 on my social studies homework reply to this question i posted

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.

Which physical feature minimizes population density in northern africa?