Why did the U.S. government include a prohibition on slavery in the treaties with Native Americans in Washington Territory? (1 point) Responses to avoid the controversy of allowing slavery to avoid the controversy of allowing slavery to discourage settlers from Southern states from moving to Washington Territory to discourage settlers from Southern states from moving to Washington Territory to prevent Native Americans from selling slaves to settlers to prevent Native Americans from selling slaves to settlers to prevent the government from promoting slavery in Washington Territory

The U.S. government included a prohibition on slavery in the treaties with Native Americans in Washington Territory to prevent Native Americans from selling slaves to settlers.