Social Security was an important piece of
legislation because it
A provided monthly retirement benefits.
B encouraged state governments to improve schools.
C forced the federal government to hire the
unemployed.
D mandated that workers be issued safety equipment.

answer:

Explanation:

A... Hope that helps...

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.