Either communist oppression or Germany's strength. I'm not sure.
Answer: The great pyramid reveals phi, pi, Euler's constant, the speed of light, the Fibonacci series, the golden mean and much more, all embedded within its sacred geometry.
One of the main reasons why this occurred was because demand for furs increased dramatically in Europe, due to their value that could be used to buy spices and other goods.
A it forced the Japanese to call off their attack on New Guinea