Islamic immigration is unlike any other form of immigration. The political doctrine of Islam started with Mohammed’s migration from Mecca to Medina. After Mohammed went to Medina his message changed from pure religion to politics and jihad. Only 150 Arabs in Mecca converted, but after 10 years of jihad, every Arab became Muslim.
The migration from Mecca to Medina marks the beginning of the Islamic calendar, since it was migration that produced success.
There are 91 verses that command Muslims to imitate Mohammed. Therefore, every Muslim has the duty to bring the Sharia to the host country, in order to Islamicize it.