Barbarossa was the crucial turning point in World War II, for its failure forced Nazi Germany to fight a two-front war against a coalition possessing immensely superior resources. The Germans had serious deficiencies.
<span>Keple's three laws are as follows:
a) Planets move around the Sun in ellipses, with the Sun at one focus
b )The line connecting the Sun to a planet sweeps equal areas in equal times.
c) The square of the orbital period of a planet is proportional to the cube (3rd power) of the mean distance from the Sun
(also stated as-- ...of the "semi-major axis" of the orbital ellipse, half the sum of smallest and greatest distances from the Sun)</span>
The fall of Rome and the replacement of Rome's empire by an assortment of barbarian and semi-barbarian rulers was certainly a big factor on the development of both feudalism and the monastery system.
