Americans experienced increases in taxes under harding.

Yes, technically it is true that Americans experienced increases in taxes under Harding, but it should be noted that many of these were tax continuations. 

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