Explanation:
As Europeans moved beyond exploration and into colonization of the Americas, they brought changes to virtually every aspect of the land and its people
George Washington Bush and another family, the Simmons, moved west on the Oregon Trail, but by the time they got there, a law was past that African Americans could not settle in the Oregon Territory, so instead they moved cross the Columbia River into land owned by both Great Britain and the United states, and the Bush's and five other families created a settlement there called "Bush Prairie."
Bush's experience as a multi-racial (Irish and African) person show the interdependence of people of different races on the western frontier, as well as the difficulties regarding racial prejudice.
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England.
Between the two nations, there had been much conflict over this channel, England being the one to hold control of it before hand.
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The movement of Soviet troops into Afghanistan.
Answer: the Roman Republic had a system of checks and balances
Explanation: just answered this question correctly
