Which geographic feature was used to establish the proclamation line of 1763

The Appalachian Mountains served as the line beyond which settlement was forbidden. West of the line was to be considered an Indian reserve. The proclamation proved largely ineffective and only angered settlers and political investors in the land.

the following best describes postwar era writers in their works:

progressive

many writers,authors,novelists,poets concentrated more on social art and social writing and stayed away from political writings.