Why were river systems important in supporting early civilizations and in them flourish?

a. they provided transportation to import food.
b. they were the only source of food for early civilizations.
c. they provided water for irrigation and agriculture.
d. they were natural barriers which prevent attacks.

What did passage of the immigration act of 1965 accomplish? the law lowered the number of asians allowed to immigrate to the us. the law allowed no more immigration from european nations. the law supported victims of political persecution. the law made an effort to establish a quota system.

Who is the current chief justice of the united states?

Isaiah is a citizen of florida. he would like to propose a new amendment to his state's constitution to be voted on in the next election. is isaiah able to do this? no. the u.s. and florida constitutions do not allow citizens to add amendments to the state or federal ballot. no. the florida constitution says citizens may only propose new laws or amendments at local government meetings. yes. the florida and u.s. constitutions allow citizens to add amendments to be voted on in the next federal election. yes. the florida constitution allows citizens to propose amendments to the state constitution to be voted on in the next state election.