Which economic system do you think is best and why? (Between traditional economy, market economy, command economy, and mixed economy)

I think that it is a mixed economy

Explanation:

because it does have some things in the traditional, market and command economy

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.