Truman presents American policy as both offensive and defensive. Because he makes it known to the Soviets that America is standing up against Communism, Thus by showing the Soviets what America is really made of. He uses the word contain to address how communism is. He doesn't want communism to die or grow rapidly, But he wants it to stay at the level it currently is at shortly after WWII.
Hope this helps! :)
Adam and eve and the resurrection
I would say that the answer is the Panama Canal. Even though construction began in 1904, it is the only canal I can think of which fits the description given.
The canal cuts across the isthmus of Panama and it connects the Atlantic and the Pacific Oceans.
There was the Old, Middle, and New Kingdom and after each time period, there was an "intermediate" period.
