What are the physical characteristics that allowed the four river valley civilizations to tourism

a more perfect union: the creation of the u.s. constitution. the vote was unanimous. saddled with this weak government, the states were on the brink of not to lend a hand to any proceeding that seemed to pose a threat to that protection. delegates from virginia and other large states demanded that voting in

a

explanation:

your answer would be just capitalism.

i believe it was the shinto