2 which sentence provides the strongest textual evidence for the main idea of "Introduction to Aboriginal Fire Use in North America"? The abundance of rich prairie ready for the plow was one of the primary reasons for settlers to head west to the present-day States of California, Idaho, Oregon, and Washington, and later to

establish homesteads on the Great Plains.

O Many people discount the fact that Indians greatly changed ecosystems so they could survive and flourish in North America

O Researchers today tend to believe that the concepts "nature" and "wilderness" are human constructs, not reflections of an original pristine landscape.

The many original diartes, letters, books, and reports by eyewitnesses of Indian fire use from the 1600's to the 1900's have yielded considerable evidence that American Indians did use lire to

change ecosystems.