Imperialism in Muslim lands occurs at the downfall of the Ottoman Empire, the European pressure, uprisings, and demands for reforms eventually caused it. After it's downfall the surrounding countries were also effected. These were the Muslim Lands.
When it came to imperialism there were a couple countries involved with the muslim lands but the biggest two were of course Britain and technically itself because as Britain influenced one muslim land, that land would "infect" in a way its surrounding countries.
The prophet of islam and the reason there was muslim imperialism
Effects of Muslim Imperialism
Thanks to muhammad, and imperialism, muslim lands improved economically and also politically standing because he increased cotton production in Egypt