How did changes to the silk road force europeans to look for other ways to trade with asia

The Silk Road became dangerous. Europeans needed a new way to reach Asia. At 1st they were trying to sail around Africa.

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