<em>Occurred after the Revolutionary War </em>This is the correct option.
The Early American Literary Period took place <em>before</em> the European colonizers arrived in the U.S. This period was from 1607 to the late 1700. The Revolutionary war took place towards the end of that period: between 1765 and 1783.
<em>No improvement or correction is required </em>This is the correct option.
Property values are rising in our area, (which <u>makes</u> <u>us</u> feel wise for buying our home years ago.) The underlined words are key words: <em>makes </em>is the main verb in the clause and refers to a general feeling ; it expresses a cause at the moment of the message: the present time. <em>Us </em>coordinates with <em>our</em> <em> </em>so the objective pronoun should indicate first person pronoun.