Answer:
Right choice is:
b. to collect scientific and practical information of the land.
Explanation:
The main purpose of the expedition was to explore and map the new territory recently acquired, the Louisiana Purchase, find a route to the West and the Pacific and establish an American presence before Britain or other powers would do it. The secondary goals were scientific and economic: to get to know the flaura and the fauna and make trade contacts with the Indians.
Black powder because it makes bullets for the guns that were created. Also grenades and whatnot.
You didn't give any answer choices..
Americans didn't like how brutal the Spanish tactics were
