In which year did communist rule end in russia?

Iwill be giving 15 points to whoever answers the concept of checks and balances means that each branch of governmenta. has its own powers and responsibilitiesb. is clearly described in articles of the constitutionc. has the ability to correct the other branches in case of an errord. is set up so that in case of constitutional crisis, the governement will continue to operate

And other public buildings played a major role in the daily lives of the people of ancient greece. a. arenas b. courthouse c. temples d. malls

Who founded the social contract theory of the government