During which dynasty did Confucianism replace legalism as the main ruling doctrine?

the Han dynasty

During the Han dynasty, Confucianism replaced legalism as the main ruling doctrine. The Han Dynasty in China began in 202 BCE and ended in 220 CE

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.