In terms of contributing writers and the range of subjects it dealt with, american literature in the early twentieth century was more and than it was in the nineteenth century.

more diverse and broader

Explanation:

In terms of contributing writers and the range of subjects it dealt with, American literature in the early twentieth century was more diverse and broader than it was in the nineteenth century. Authors began to explore more ideas and began to write about problems faced in everyday living and about everyday people. They also began to write about everyday life in Boston's civilized culture.

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