Our USA government has so many branches and varying election years in order to prevent what from happening?

The United States government has different branches to ensure that no one branch becomes too powerful, hense the reason for checks and balances. The United States government has varying election years in order to prevent senators from permanently combining for "sinister purposes."

1 and 3

explanation:

learned it in 6th

the correct answers are 1, 2 5, 6