which ruler issued the first rupiya in country
Rupee Rūpiya was first named to a silver coin weighing 178 grains (11.53 g) minted in northern India by Emperor Sher Shah Suri during his brief rule between 1540 and 1545.[3] Suri also introduced copper coins called dam and gold coins called mohur that weighed 169 grains (10.95 g).[4]
Emperor of Japan The role of the Emperor of Japan has historically alternated between a largely ceremonial symbolic role and that of an actual imperial ruler. Since the establishment of the first shogunate in 1199, the Emperors of Japan have rarely taken on a role as supreme battlefield commander, unlike many Western monarchs. Japanese Emperors have nearly always been controlled by external political forces, to varying degrees. In fact, between 1192 and 1867, the shōguns, or their shikken regents in Kamakura (1203–1333), were the de facto rulers of Japan, although they were nominally appointed by the Emperor. After the Meiji Restoration in 1867, the Emperor was the embodiment of all sovereign power in the realm, as enshrined in the Meiji Constitution of 1889. Since the enactment of the 1947 Constitution, he has been a ceremonial head of state without even nominal political powers.