Christopher Columbus's first trip to the Americas in 1492 is typically referred to as the "Discovery of America," although though the region was already populated by indigenous peoples and had previously been visited by other people, including the Norse explorer Leif Erikson, about 1000.
In history what was the role of Roman Empire in wold can somebody know ? If any one know then please answer in the comment section .
In order to stop the US Pacific Fleet from obstructing Japan's ambitions to grow its empire in Southeast Asia, Japan launched an attack on Pearl Harbor in December 1941. In particular, Japan saw the US naval presence at Pearl Harbor as a significant barrier to its goal of controlling resources like tin, rubber, and oil.
