Answer
The factors which are examples of how physical geography may have affected the great migration into the United States are;
• Rivers and oceans that affected transportation patterns
• Mountains that affected rainfall patterns and settlements
Explanations
The desire for natural resources largely influenced migratory patterns into the United States during the great migration period. Rainfall patterns made migrants to avoid certain routes to be able to survive the journey and reach the destination. Heavy storms contributed to loss of many migrants crossing into the U.S through ocean vessels that could sometime loose stability and sink in the middle of the ocean.In the 18th century, massive immigrants from Ireland landed into their colonies but traveled far to reach Pennsylvania which offered generous land grants.The area had plenty of land where Scotch-Irish settlers kept increasing in the region until they reach Appalachian Mountains due to the availabilty of land they could practice farming.
