"Re-creations of the three ships that brought America's first permanent English colonists to Virginia in 1607 are on exhibit at Jamestown Settlement, a living-history museum of 17th-century Virginia. The original Susan Constant, Godspeed and Discovery set sail from London on December 20, 1606, bound for Virgin- ia."-google
The main reason why revolution swept so many African nations following their independence from European rule was because there was a giant power vacuum that needed to be filled--usually by a dictator.
The primary effect of cultural exchange between Europe and the Islamic world was that Muslim goods and knowledge led to some advancements in European society. One advancement example is the number system.