The backwardness of muslims are mostly of their own making. The majority are not seriously interested in modern education, family planning, or scientific healthcare, food or dressing. Half the population are wrapped in black clothes and kept unproductive (women) and kept away from mainstream. Ignorent mothers bring up ignorent young ones. Rigid illogical religious beliefs inhibits rational thinking and creativeness!
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Yes it is politics. In fact financial backwardness is a economic and social problem. People from all religions are facing this. Being a muslim or any other religion has nothing to do with it. This is a myth created by politicians. Anyone who gets proper education and is willing to work hard gets success in India.