Who was the Sultan of Delhi who is reputed to have built the biggest network of canals in India?
The Sultan of Delhi who is reputed to have built the biggest network of canals in India was Firoz Shah Tughlaq . Canal system of Firoz Shah Tughlaq. To support the newly founded city of Hissar-i-Firoza, in 1355, he constructed a double system of canals from Yamuna to Sutlej.