Explain how an immigrant’s status can change from a legal alien to an illegal alien.

If a immigrant Visa has ran out , If they leave or come to the country with out legal permission. If they do anything illegal and get deported back to original country. If they stayed after the visa has timed out.

B,c and d are the answers

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