Which physical features helped protect ancient Egypt from invaders?

Three different geographic features in Ancient Egypt are the Desert, the Delta, and the Fertile Land. The desert was a barren place full of sand dunes, mountains, and cliffs. The desert was a dangerous place and therefore acted as a natural barrier between ancient Egypt and invading foreign armies.

Explanation:

the year 2019 marks the 2115th anniversary of his birth.

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.