Why did the French build the fort Duquesne

Fort Duquesne, built at the confluence of the Allegheny and Monongahela rivers which forms the Ohio River, was considered strategically important for controlling the Ohio Country, both for settlement and for trade. ... As the area was within the drainage basin of the Mississippi River, the French had claimed it as theirs.

Explanation:

federal appellate courts are called courts of appeals. cases can be further appealed to the u.s. supreme court. cases are heard for the first time in a trial court. if either party disagrees with the decision in the trial court, they can appeal, asking a higher court to review the decision.

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c. pro-democracy demonstrations.