Because they follow the mad ravings of a murderous, raping, pillaging pedophile.
Their “holy” book requires them to subjugate, convert or kill everyone else on the planet.
Please, reconsider your islamophobia. In the defense of Islam, the “holy book” says that a Muslim wife can’t deny sex to her husband. That should be sweet to humanity, the half one with outside plumbing that is.
Those areas are backward because they’re authoritarian and they don’t value education instead mistaking memorizing some lines in a 7th century tome as education. This is of course completely useless and of no practical value. There is no render unto Caeser in Islam. There is no separation between religion and government, law or business.
As if all of that were not enough, Islam was spread by the sword and is by its nature, imperialistic. This does not equip muslims to deal with the rest of the world on a productive basis. Other people’s and religions can bump along without problems but whenever Islam comes into contact with any other culture, there is violence. Be it North Africa or India/Burma or in the Caucasus region or in Europe or China or as far afield as the Philippines, wherever there is Islam there is violence. The problem is not everybody else. Its obviously a problem with Islam.