I really need help! i would really appreciate any help:)

B.

Explanation:

the major characteristics of the "Era of Good Feelings are

Foreign Policy.

Nationalism.

Sectionalism.

The “Era of Good Feelings” marked a period in the political history of the United States that reflected a sense of national purpose and a desire for unity among Americans in the aftermath of the Napoleonic Wars and the War of 1812.

hope it helps ;)

honestly it just comes down to the

1) union forces launched a surprise attack.

2) more confederate troops arrived by train.

3) union forces retreated.