Which of the following is an accurate example of how civilizations were impacted by physical geography?
The Saharan Desert was a physical boundary that isolated North and South Africa from one another.
The Swahili in Africa were exposed to Christianity by Arab traders due to the trade winds of the Indian Ocean.
North and South China were united throughout history because of a lack of physical barriers.
The governments and religions of Southeast Asia were similar to Eurasia because it was connected by rivers.