Answer:
The Ice Age froze the land and they skied across the ocean to North America. They were following animals.
Explanation:
Navajo code talkers<span>. </span>Philip Johnston<span>, a civil engineer for the city of Los Angeles, proposed the use of Navajo to the United States Marine Corps at the beginning of World War II. </span>Johnston<span>, a World War I veteran, was raised on the Navajo reservation as the son of a missionary to the Navajo.</span>
Territorial Acquisition—this term simply means land that taken over by a country.