PLEASE HELP ME what was the main reason Great Britain established the Proclamation Line of 1763?

A) to end Britain's war with France over disputed territory

B) to force American colonists to pay for the French and Indian War

C) to prevent American Industrial Development of Ohio River Valley

D) to avoid conflicts between American colonists and Native Americans

D. To avoid conflicts between American colonists and Native Americans

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The answer that completes the statement above is this: became more isolated from the world of work. This changes in the middle-class American family has been greatly influenced by the rise of cities and industries which made great changes in all aspects of the American society. The middle-class American Family concentrated more on the business aspect rather than on the working aspect.