It is false that since new lithosphere is being created at oceanic ridges due to plate tectonics, the earth is getting larger all the time.
In Geological terms, the rocky outer part of the Earth is called the lithosphere. It is very rigid, solid, and it is not as hot as the other parts. Its thickness is about 90 to 100 kilometers from the surface of the earth.
Islamic armies faced major resistance from cities in the Persian Empire. Islam first developed in Europe and then spread inland through Africa. Islam had its origins in Constantinople before spreading to Arabia.