Both the French and the British had both claimed the upper Ohio River Valley. This led to many cannons and gunshots because both sides were continuesly capturing the territory. The French had built a fort called Fort Duquesne. The city of Pittsburgh is located there today. I hope this helped you!
Answer:
Shays' Rebellion proved that the Articles were too weak.
Explanation:
What are the six cities the question asks about
Answer: first appearances of gunpowder artillery
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