The monroe doctrine and anti-imperialism.
Answer:
On August 3, 1492, Columbus set sail from Spain to find an all-water route to Asia. On October 12, more than two months later, Columbus landed on an island in the Bahamas that he called San Salvador; the natives called it Guanahani.
He made an invention or experiment for some type of wave and he tested it. So that's basically why he is famous.
Roman Religion Challenged. Judaism and Christianity, while posing separate threats to the empire, had one thing in common - they both refused to participate in the worship of the Roman gods and make sacrifices at their temples.
