Select all that apply. how do labor unions try to increase the wages of workers? collective bargaining reducing the supply of labor increasing the demand for labor

It developed as a reaction to the impact of european colonialism in africa on peoples of african descent. in the  mid-20th century, activists in africa adopted pan-africanism as a rallying cry for independence from colonial rule. some african pan-africanists sought to unite the continent as one independenthope it was useful

C4 i’m pretty sure