"The conquest, the quickened pace of commerce, and the increase of traffic between India and the heartlands of the Umayyad and Abbāsid caliphates, as well as western Asia, Africa and Europe, also led to a noteworthy dissemination of numerous Indian crops... and new agricultural techniques to parts of the world far beyond India. This process was relatively slow and less easily visible, but its results revolutionised agriculture and may well have been the most significant legacy of early Muslim rule in Sind over the long term."