It means our sea in Latin.
Have no clue. I dont ever remember studying that.
It represented social Darwinism, so it would be the first choice.
You didn’t add any options here but I’ll define feudalism for you. Feudalism is a military hierarchy where the ruler offers troops land in exchange for military service. The individual who accepts this offer is called a vassal. The ruler who offered the land is known as the vassal’s lord.
