The constitution of the United States set up a set of checks and balances among the three branches of government. The Legislative, Executive and Judicial powers constitute the structure of the american government, and they have power to check each other's way of work.
One example of the check and balance system is that the Supreme court of the United States may check congress by declaring a law passed by this one as unconstitutional. This is a clear check limit used against the legislative power, that is the congress. But on the other hand, the power is balanced because the members of the Supreme Court are appointed by the President of the country (the Executive power), and to be appointed they have to be approved by the Congress.
B I think sorry if it’s wrong
The Portuguese, the Dutch, the English is the chronological order of European countries that controls the African slave trade. Slaves were used in mining and plantations. Five times as many Africans arrived in the Americas than in Europeans, as the result of this slave trade.
The first amendment grants the right to freedoms concerning religion, the expression of religion, the assembly of religion and the right to petition religion. It also forbids congress from promoting one religion over another as well as preventing the restriction of an individual’s religious practices.