Which north american geographic feature was not formed by retreating glaciers during the last ice age? a. niagara falls b. the grand canyon c. the great lakes d. the upper mississippi river

There are so many. The Mississippi delta. The Grand Canyon of Arizona. Every volcano. The Bonneville salt flats.

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.

a system of cooperative federalism emerged, as the powers of the federal government expanded.