What were the major technological changes introduced during the Sultanate period? How did those technological changes influence the Indian society?

सल्तनत काल के दौरान किये गये बड़े तकनीकी बदलाव क्या थे? उन तकनीकी बदलावों ने भारतीय समाज को कैसे प्रभावित किया था? (250 words)
What were the major technological changes introduced during the Sultanate period? How did those technological changes influence the Indian society? (250 words)