The main purpose of NAD is to A preserve and represent the deaf and hard of hearing of the United States
B construct deaf schools in all major U. S. cities and communities
C engage hearing populations using advertising campaigns
D decrease resistance to mainstreaming the deaf population

the answer is A

Explanation:

europe would not recognize the confederacy as an independent nation.

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.