Can someone me with this it is very important and

which russian leader who had earned a nickname as ñthe greatî, announced in 1480 that he would no longer give his allegiance to the tatar empire?

a.
basil

b.
ivan iii

c.
ivan iv

d.
vladimir

the u.s. department of labor is a cabinet-level federal agency that supports the american labor force. it has three overall functions. first, it protects the rights of workers and retirees. second, it provides job training. third, it provides statistics related to working, prices, and income.

thurgood marshall

explanation: in 1954, thurgood marshall and a team of naacp attorneys won brown v. board of education of topeka, kansas. in this landmark decision, the supreme court held that segregation in public education violated the equal protection clause of the fourteenth amendment.