The principal reforms for which Sher Shah is remembered are those connected with revenue administration. He set up a revenue collection system based on the measurement of land. Justice was provided to the common man. Numerous civil works were carried out during his short reign; planting of trees, wells and building of Sarai (inns) for travelers was done. Roads were laid; it was under his rule that the Grand Trunk road from Delhi to Kabul was built. The currency was also changed to finely minted silver coins called Dam.
During his lifetime, Sher Shah commissioned the construction of tombs for his father, Hasan Khan Suri and for himself. A third one was begun for his son Islam, but remained unfinished due to the dynasty's fall. Sher Shah died in 1545 by a gunpowder explosion and left his kingdom to his two sons and grandsons. Unfortunately, his successors were incompetent and succumbed to old Afghan rivalries. This resulted in the downfall of the Suri Dynasty.
Image via Wikipedia