One difference between work in the 18th and 19th century

Ineed asap! ! what is the name of the system in which each branch of the u.s government can limit the actions of the other branches? a. perpetual union b. division of powers c. cooperative federalism d. checks and balances

Which aspect of the postwar era did jazz’s liveliness, looseness, and improvisation most reflect?

What advantages did the ming dynasty gain from the land it controlled?