Humans originated from Africa
Answer:
The answer is D.
Explanation:
The Korean War was the 1st battle of the Cold War, and 1st major proxy war fought between the US and a Soviet communist supported enemy. A proxy war occurs when one or more opposing powers instigates a war and then uses 3rd parties to fight on their behalf.
Answer: Austria blamed Serbia, which then looked to Russia for support. Germany declared war on Russia in support of Austria and on France because of her alliance with Russia.
Explanation: Why did austria refuse military support to russia
Answer:
A. Humans first lived in East Africa.
B. Migration occurred by land and sea
D. Humans crossed a land bridge to North America.
Explanation:
Human migration is defined as the movement of humans from one place to another.
The earliest humans lived in East Africa about 3 million years ago and the earliest humans are known as Homo habilis. Richard Leakey found the first human species in the 1960s at Omo Kibish in south-western Ethiopia.
Migration occurred by land and sea in the earlier time. Humans used land bridges to move from one place to another and whenever sea level goes down they migrate through sea or water sources as well.
During the last ice age, humans crossed a land bridge to North America from Asia about 20,000 years ago. The land bridge is submerged underwater due to rise in sea levels.
Hence, the correct answers are "A, B, and D"
