Answer:
Alliances contributed to the start of World War I because so many alliances were being created all over the world. Most alliances would agree to protect one another if either country in that alliance got attacked by other countries. So if a country got attacked by another one, you could expect the country being attacked to be backed up by their alliance, creating future wars to commence.
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"They served mostly in noncombat roles" is the one statement among the following choices given in the question that is true <span>about African Americans who served in World War I. The correct option among all the options that are given in the question is the fourth option or the last option or option "D".</span>
Answer:
C] Both the Mayans and the Aztecs inhabited parts of the North American contient.
Explanation:
Farmers during the twenties were in debt because of the Great Depression and had to purchase expensive machinery for their farms.
The answer would the Columbian Exchange.