It doesn't apply to executive orders
1) They mostly spread Islam through conquering new countries. What they did also was unite all people under a single rule and ended religious uprisings.
2) There was tensions because one faction believed that Muhammad should be succeeded by someone chosen by people, while the other faction believed that his successor should be someone from his bloodline.
Answer:
In U.S.A, about 30-35....
As revolution means a forcible take over or change of a government usually or in favor of a new order A scientific revolution would be changing the way science works. for example :travel creating instant teleportation would be a scientific revolution because it changes the way the way the science of transportation works .
In astronomy, the geocentric model (also known as geocentrism, often exemplified specifically by the Ptolemaic system) is a superseded description of the Universe with Earth at the center. Under the geocentric model, the Sun, Moon, stars, and planets all orbit Earth.
