Why don't you understand difference between fixed currency and floating currency? Today's currency is floating and hence the old concept of fixed currency doesn't work
No country is absolutely harmonious. Do you think Pakistan is harmonious? Do you think Egypt is harmonious? Do you think Turkey is harmonious? (I am not including oil states here as there is other factors in oil states)
Here is a rough translation -
"After the Śûdra follow the people called Antyaja, who render various kinds of services, who are not reckoned amongst any caste, but only as members of a certain craft or profession. There are eight classes of them, who freely intermarry with each other, except the fuller, shoemaker, and weaver, for no others would condescend to have anything to do with them. These eight guilds are the fuller, shoemaker, juggler, the basket and shield maker, the sailor, fisherman, the hunter of wild animals and of birds, and the weaver. The four castes do not live together with them in one and the same place. These guilds live near the villages and towns of the four castes, but outside them"
I don't see where antyaja is considered as untouchable. Now, amongst the antyaja, shoemaker and few others were said to be separated from the rest. But even the it is only about lack of intermarriage rather than hereditary discrimination. Are you saying that merely because people wouldn't intermarry, there is a discrimination?