Mediterranean Sea is the answer.
The samoset Indians were the first people, I am sure.
Officially recognized as the one of the seven wonders of the
modern world by the American Society of Civil Engineers, the Panama Canal was
and still is one of the biggest and hardest engineering feats ever
accomplished. It greatly reduced the
time necessary to get from the Atlantic to Pacific Ocean but unfortunately it
also led to the resentment of various Latin countries including Columbia towards
the US because of the role US played in the conflict between Panama and Columbia.
