The answer is letter B. It freed the slaves in the Border States.
<span>The
Emancipation Proclamation was the presidential proclamation that had lead to the
freedom of many slaves in the borders of the United States. Because of this,
the slave were legally freed from their owners after the Emancipation
Proclamation.</span>
The term "Trail of Tears" refers to the difficult journeys that the Five Civilized Tribes took during their forced removal from the southeast during the 1830s and 1840s. The Cherokee, Creek, Choctaw, Chickasaw, and Seminole were all marched out of their ancestral lands to Indian Territory, or present Oklahoma.
The strong agriculture and trading affected china because under the song, the amount of land increased and they traded with china