How many years after the constitution was written was the bill of rights added

As the coach of the u.s. olympic cycling team, i can state without question that the swedish and french teams were using illegal steroids. how else could they have beaten us so badly in the last competition? the u.s. team trained much harder and was much more skilled than our opponents. we only lost because a few teams cheated.

The supreme court serves what important function in the u.s. federalgovernment?

Which statement is true of both presidential and parliamentary systems of government?