4. What mountain range became the boundary line set by the Proclamation of 1763
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https://history.state.gov/milestones/1750-1775/proclamation-line-1763
The mountain range that became the boundary line set by the Proclamation of 1763 was the Appalachian Mountains.
To find this answer, you can start by researching the Proclamation of 1763. This was a measure enacted by the British government after the French and Indian War to regulate the governance and settlement of the newly acquired North American territories. The purpose of the proclamation was to prevent conflicts between colonists and Native American tribes by establishing a boundary line.
To determine which mountain range became the boundary line, you can then search for the specific details of the Proclamation of 1763. You will find that under the proclamation, the boundary line was established along the Appalachian Mountains. This means that colonists were prohibited from settling west of the Appalachian Mountains, in order to create a buffer zone between Native American territories and the British colonies.
Overall, the Appalachian Mountains became the geographical feature that marked the western limit for colonial expansion as set by the Proclamation of 1763.