<span>Because so many Africans served in Allied armies and learned new liberal ideas.</span>
The answer of this question on edguenity is
D. Helped strengthen the power of the federal government.
Hope this helps
On 1967 of April, with the United States at war in Vietnam, Ali declined to be accepted into the military, saying "I ain't got no squabble with those Vietcong." On June 20, 1967, Ali has indicted draft avoidance, sentenced to five years in jail, fined $10,000 and restricted from boxing for a long time.
Answer:
There are 3 main reasons.
1. heat from when the planet formed and accreted, which has not yet been lost.
2. frictional heating, caused by denser core material sinking into the center of the planet.
3. heat from the decay of radioactive elements.
I hope my answer helped!