Can sumone plz help me

Three broad zones with different climates and resources shape russian life. they include:

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

Capitalism competed with dominance in the twentieth century communism merchantilism free enterprise feudalism