The main purpose of Lewis and Clark's journey was to
o establish settlements in the Louisiana Territory.
o set up trading posts in the Louisiana Territory.
o investigate whether or not Louisiana was worth purchasing.
o explore the Louisiana Territory that the United States had just purchased.

D) To Explore the Louisiana Purchase.

D) To Explore the Louisiana Purchase.

Explanation:

Just did this got it right :)

the growing interconnectedness of the world through communication, trade, and the exchange of ideas is an important theme in the history of the 20th and 21st centuries.

explanation: