they are backward because the religion that informs them is itself backward. for example, the koran instructs them to be horrible to women, so they society is horrible to women
Your wives are a place of sowing of seed for you, so come to your place of cultivation however you wish and put forth [righteousness] for yourselves. (Sura 2:223)
And due to the wives is similar to what is expected of them, according to what is reasonable. But the men have a degree over them [in responsibility and authority]. ( Sura 2:228)
And [also prohibited to you are all] married women except those your right hands possess... Indeed, Allah is ever Knowing and Wise.(Sura 4:24)
it instructs them to be horrible to disbelievers
And kill them wherever you overtake them and expel them from wherever they have expelled you, and fitnah [disbelief] is worse than killing. And do not fight them at al-Masjid al- Haram until they fight you there. But if they fight you, then kill them. Such is the recompense of the disbelievers. Fight them until there is no [more] fitnah and [until] worship is [acknowledged to be] for Allah . But if they cease, then there is to be no aggression except against the oppressors. [Fighting in] the sacred month is for [aggression committed in] the sacred month, and for [all] violations is legal retribution. So whoever has assaulted you, then assault him in the same way that he has assaulted you. And fear Allah and know that Allah is with those who fear Him. (2:191-194)
[Remember] when your Lord inspired to the angels, "I am with you, so strengthen those who have believed. I will cast terror into the hearts of those who disbelieved, so strike [them] upon the necks and strike from them every fingertip."(8:12)
we can go on forever, it's like this shit every other page