What did the
Mayans develop
that shows they
were an advanced
civilization?

J O’K: The Maya developed pure sciences that were advanced beyond the accomplishments of the western world for thousands of years. Their feats in advanced astronomy, mathematics and writing were unsurpassed for millennia. Their calculations of the solar year were more accurate than modern astronomy.

i think the answer is b.

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.