Islam is not a religion, nor is it a cult. In its fullest form, it is a complete, total, 100% system of life.
Islam has religious, legal, political, economic, social, and military components. The religious component is a beard for all of the other components.
Islamization begins when there are sufficient Muslims in a country to agitate for their religious privileges.
When politically correct, tolerant, and culturally diverse societies agree to Muslim demands for their religious privileges, some of the other components tend to creep in as well.