Can anyone help with #7. Ss question

well based on what i've learned the USA believed that the future of US prosperity and democracy was at risk if the expansion of communism across Europe and Asia. 1954, French were driven from their colony and the US feared that communism would spread.

i hope this helps

would not cooperate with each other voluntarily.

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration