under the conception of government, each branch of government has built-in checks and limitations placed on it by on or more different branches of government in order to ensure that any branch is not able to exert total dominance over the government 라는 긴~ 문장이 있는데

제가 대충 끊어서 해석은 했거든요..?

under the conception of government,

each branch of government has built-in checks and limitations

placed on it by on or more different branches of government

in order to ensure that any branch is not able to exert total dominance over the government

여기서!! 세번째줄 placed on it by 여기서 it 이 뭘 뜻하는거죠??