What did the einstein-szilard letter warn president roosevelt about in 1939?

that the us was secretly researching nuclear weapons
that germany was researching nuclear weapons
that the us planned to use nuclear weapons against japan
that germany planned to use nuclear weapons against japan

That Germany was researching nuclear weapons.

Explanation:

This letter was written by Leo Szilárd and signed by Albert Einstein, and sent to warn the President of US Franklin D. Rooselvelt in 1932, about Germany developing atomic bombs.

its a map of something

answer: ensure protection from communism

explanation:

the north atlantic treaty was largely dormant until the korean war initiated the establishment of nato to implement it, by means of an integrated military structure: this included the formation of supreme headquarters allied powers europe in 1951, which adopted the western union's military structures and plans.