In 1795, the Treaty of Greenville -enabled the United States to acquire Oregon Country.
-gave much of present-day Ohio to the United States.
-ended American settlement in the Ohio River Valley.
-established a confederacy of American Indian tribes.

The Treaty of Greenville was a treaty of "peace and friendship" between the U.S. and Native American tribes (northern territory). The Treaty of Greenville established a clear boundaries between the Native American lands and the lands open to white settlements.

a.   it resulted in widespread unemployment.

the three roles stated in the dialogue develop the siblings' personalities.

lloyd's personality looks like a trademarketer

dana's personality is afraid from lloyd's behavior and the oldest sister is a decided person who tries to solve any conflict