What were the major causes that led to the inevitable collapse of the Soviet Union?

Secondary school falls between a . kindergarten & elementary b. elementary school & post secondary school c. post secondary school & higher education d. middle school & high school

Guess what ya'll tmr is my birthday i finna be 15 lets ! and if sum person wanna report me because i'm happy then (f.uuu.c.k) outta here cuz you just a b.ii.t.c.h.)

Which allows college students to work part time jobs to pay for educational expenses