Question

Write if these cause the expansion of the U.S, or if the expansion of the U.S is an effect

lewis and clark expedition:
war of 1812:
Monroe doctrine

Answer 1

~Senpi Boi here~

Step-by-step explanation:

The Westward expansion is the 19th-century movement of settlers into the American West that began with the Louisiana Purchase and was fueled by the Gold Rush. The Oregon Trail and a belief in manifest destiny.

(Hope this helps!)