Which two sentences best describe the overall impact of the Louisiana Purchase? A-The United States lost financially but ensured a lasting peace with France.
B-The United States gained a large territory and secured important trade routes.
C-The Purchase started a long period of westward migration in the United States.
D-The Purchase led to the decline of enslaved labor in the southern United States.
E-The Purchase exposed the United States to attacks from Russian-controlled lands.