Answer:
1- Based on the map, St. Marks, Florida, would be the best location for a shipping port, since it is an open water coastal location. In this way, large ships would be able to maneuver without complications to enter or leave the port.
2- As soon as they moved west from the Mississippi River, Lewis and Clark saw that the mountains in the west were taller than the mountains in the east, since, while east of the Mississippi are the Appalachians, they have a maximum height of 2000 meters, while west of the Mississippi the Rocky Mountains have a maximum peak of 4400 meters.
3- The middle United States has fewer changes in elevation that the western United States. Middle America is characterized for being a region without too much altitude, where the Great Plains are. The West, on the other hand, begins with the Rocky Mountains and has, in general, great elevations, except in the coastal zone.
4- The event that led to the U.S. purchase of Louisiana was the succesful Haitian slave revolt. France was in a hurry to get rid of this colony that had been obtained only two years ago, since the rich colony of Haiti had declared its independence from France, for which the Louisiana had lost its strategic interest for the French. Napoleon then preferred to sell the colony to the Americans and not run the risk of losing it to the English.