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.
Have Mexico invade the United States
<span>Fundraising or crowd sourcing</span>
This is a source of funds that involves the
gathering voluntary contributions of money or other resources, by asking for
donations from individuals, businesses, charitable organizations and other
agencies. It is usually used to raise money for a good cause.
