Answer:
part 1: b
part 2: c
Explanation:
part 1: the rocky mountains were a barrier that didn't allow travelers to get through them easily.
part 2: the Missouri river allowed greater chances for trade and travel through the states
Series of measures introduced into the English Parliament by Chancellor of the Exchequer Charles Townshend in 1767, the Townshend Acts imposed duties on glass, lead, paints, paper and tea imported into the colonies. Townshend hoped the acts would defray imperial expenses in the colonies, but many Americans viewed the taxation as an abuse of power, resulting in the passage of agreements to limit imports from Britain. In 1770, Parliament repealed all the Townshend duties except the tax on tea, leading to a temporary truce between the two sides in the years before the American Revolution.
The right choice to your question is A. a chemist who created vaccines against Cholera, rabies and anthrax. ~~~ Check the meaning of Pasteurization.
