The size and sophistication of native american civilizations in mexico and south america can be attributed to

a. spanish influences.

b. influences brought by early settlers from siberia.

c. their way of life based on hunting and gathering.

d. the development of agriculture.

explanation:

japan participated in world war i from 1914 to 1918 in an alliance with entente powers and played an important role in securing the sea lanes in the west pacific and indian oceans against the imperial german navy as the member of the allies.

julius caesar turned the roman republic into the roman empire by coming in and taking the "dictator" role during the time of a civil war (elites vs lower classes) winning battles and reputation, then declaring him dictator for life

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