In 1681, King Charles II handed over a large piece of his American land holdings to Penn to pay the debts the king owed to Penn's father. This land included present-day Pennsylvaniaand Delaware. Penn immediately set sail and took his first step on American soil in New Castle in 1682 after his trans-Atlantic journey.
        
             
        
        
        
Answer:
Climate change, Availability of resources  
Explanation:
1. Soon enough when the climate on the planet started to become more arid and become too hot, so humans started to migrate from Africa. 
2. People started to move away to the places where resources were available.