Mr hassan nisar you dont need to prove us wrong by telling some bad aspects of muslim history. If you are true analyst then talk about Holy Prophet and the system he introduced. this is beacon for us. you praise the system which is full of malicious things. the countries and cultures you are talking about are dirty and filthy from in side. this is fully corrupted and devilish. They political system based on secularism (no God and religion), their economical system is possessed by capitalism (full of debt, interest) their social system is devastated (no relationships, sex, alcoholism, etc. ).
you can not justify their system by counting few of their research, work and inventions in science. you know better what they did in world war II, when they abducted the scientists from japan and germany. they have snatched the resources from other countries and filled their own countries. I agree that they progressed because of our weakness but they didn't progress with their own abilities. you criticized on banu umayya and banu abbas, I agree with you that most of thing which happened in those days could not be justified but why you dont mention Jabber bin hayyan, Ibn-ul-haitham, ibn-e-sina, albruni, alkhawarzmi, alkundi , imam Ghazali, etc.
I dont believe that progress is just name of some scientific inventions and so called social welfare system but I believe in the system which was introduced by my Holy Prophet (PBUH) and which Quran tells us. If we start acting upon it today you will see the heaven on the earth today. You will see one day, this system will be implemented fully. Human history doesn't change overnights but day will come when Imam Mehdi will come and God will give us liberty from this system of Dajjal. we are not impressed by this system, we can never be and we must never be. whatever attract-full-ness it has, whatever comforts it shows whatever colours of lies it shows, we will not be decieved. InsaAllah
By the way, who are you hassan nisar to teach us the lesson of history and ethics. You are himself a person of no ethics if somebody is really fan of hassan nisar then he must see the following
http://www.youtube.com/watch?v=-INmRqO1Sts