Step-by-step explanation:
The power was divided into three branches of the government, the legislative, the executive and the judicial. the checks and balances were put into place. Checks and balances mean that each branch of government is given with some powers which can be checked by the other branch. e.g The president is the head of the government but the only congress can give funds and can declare war. similarly, the president nominates the federal officials but only the Senate has the power to confirm the nominations.
A recent incident in which President Trump banned the migrants from Muslim countries was a good example of the division of power. After the announcement of the ban on the citizens of certain Muslim countries from entering the United States, thousands of travelers were stranded on the airports. At last Supreme court interfered and nullifies the President's decision