At the height of the roman empire, how far north did the empire stretch?

The Roman Empire, during its peak, went as far north as Britannia. It took the regions of Londinium and Eboracum and went passed them. It was around AD 117 when the Roman Empire reached its greatest extend. After Trajan's death, many provinces were abandoned.

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.