Why did Muslim Turkey imperialize Christian Greece etc, & why are the never colonized nations the worst off?

quite true .....Islamic imperalism was prevalent throught middle-east and south-asia ..where over centuries ...one by one they knocked off people by their sword ..or converted them .to this religion.....though muslims say islam was spread peacefull its another eyewash ...just ask the survior non-muslims of these countries .....who are still brutalised ..........muslims pick and choose what they reveal to ignorant folks .....and in the process deny their own history ......