a country places all of its power in a group of elected leaders. though there are many different states in the country, a single central government makes all political decisions. there are elections every two years to determine who will serve in the central government. A. Presidential B. Parliamentary C. Confederal. D. Unitary

answer: what was the us involvement in ww1? although the u.s. tried to remain neutral when ww1 broke out, it finally joined on april 6, 1917 after declaring war on germany. the reason for america to become involved in ww1 was germany's unrestricted submarine warfare, which had already sunk several american merchant ships.

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the answer is a) high entry costs

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it caused mass african migration, african populations to grow, african empires to topple, and racism against slaves to emerge.

after defeating german forces in north africa allied leaders turned their attention to "italy," since this was the location that made the most geographic sense before invading northern europe via france.