How and where did muslims build an empire

From what I know:

Explanation:

The moors (ancient muslims) built their empire in northern Africa, Southern Europe and around the meditaranian by spreading their religion. People like Alexander the Great did the same thing with religion, so the moors did the same. They built mosques, minorets and if you know what the blue mosque is, it used to be a catholic cathedral in constantinople (modern day istanbul turkey) but the moors invaded and covered all the catholic art and turned it into a mosque

the group i'm selecting: greeks.

a first group of greek immigrants came to the us in the 1850s. the second group came to america starting in the 1890s due to economic opportunities they didn't have back in their home caused by the hardships of ottoman rule. greek immigration was 90% male, many of them expected to work and return to greece after earning enough capital, but ultimately had to remain in the us after the greek genocide.

an interest group is an organization whose members share common concerns, and try to influence government policies that impact those concerns. elected officials frequently complain about the influence of "special interests" on american politics.