Historians and archaeologists generally agree that agriculture was the backbone of the Harappan economy. The Harappans practiced advanced agricultural techniques, including irrigation systems to enhance crop production. They cultivated wheat, barley, and peas, and evidence of cotton cultivation has also been found. The efficient use of water resources, including canals and wells, played a crucial role in supporting agriculture. The fertility of the land, coupled with technological innovations, allowed the Harappans to support urban centers and engage in trade. Historians also highlight the use of standardized weights and measures, which suggest a well-organized agricultural system to sustain both urban and rural populations.