The Principia Mathematica was written by Alfred North Whitehead
When he first became President, the conflict with Japan was
still continuing. After the war finished there was trouble in Korea which
became an impasse after China move toward in to help North Korea. Obliteration
of Europe and Asia that required to be reconstructed. The Russians declined to pull
out their troops from Germany and Eastern Europe and remained in Estonia, Latvia,
and Lithuania. There were severe labor difficulties in the US Steel industry.
The US had to readapt to a peace-time economy and recuperate from the enormous
costs of WW II.
Rotation.
Crop rotation is when a farmer changes the crops grown in the same field each year to ensure he gets the best harvest possible by not exhausting the soil of specific nutrients by repeatedly growing the same thing.
