What do I write? Please hurry <3

In 1846, a dispute over the border between Texas and Mexico resulted in armed conflict, and the Mexican–American War began. ... The Mexican army attacked them. The main cause of the war was the westward expansion of the United States. All through the 19th century Americans believed it was their right to expand westward.

the results of roman expansion produced social conflict and civil war. julius caesar gained power and became a dictator but was then assassinated. the reign of augustus began a long period of imperial rule and peace in the roman empire. rome faced the problems of how to maintain peace, law, and order.

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brainliest?

i would say that the politicial parties from state to state varies.