The purpose of the immigration act of 1990 was to amend the Immigration and Nationality Act to change the level, preference system for admission, to provide for administrative naturalization, of the immigrants of US, and for other purposes.
Answer:
Constitution was needed to control the behaviours of the rulers and the ruled.
Constitution is used by DEMOCRATIC countries
It held the notion that the governments power comes from the people.
Some causes and effects of European exploration is:
1. They brought diseases to the U.S and Africa which effected those people and causing them to die
2. They found Africans and wanted their gold and money which effected them to start the American slave trade
And many other reasons....