The cities of the fall line were established where the mississippi river comes out of the rocky mountains.

Great Falls, MT, Bismarck, ND, Pierre, SD, Sioux City, IA, Omaha, NE, Saint Joseph, MO, Kansas City, KS, Kansas City, MO, St. Louis, MO are the names of  the cities whose fall line were established where the Mississippi River comes out of the Rocky Mountains. The length of this river is 3,730 Km with basin size 2,980,000 km2.  

Right Tributaries

White River, Minnesota River, Arkansas River, Missouri River,  Des Moines River  

Left Tributaries

Wisconsin River, Ohio River, Rock River, Illinois River, Kaskaskia River, St. Croix River  

the social contract theory

equal pay act of 1963. the equal pay act, signed in to law by president john f. kennedy on june 10, 1963, was one of the first federal anti-discrimination laws that addressed wage differences based on gender. they felt that this would prevent employers from undercutting future wages for men.