DRTV generally bypasses traditional retail stores to make a product sale directly with the consumer, but can also be used to drive product sales at retail. DRTV is comprised of three primary marketing subgroups of short form, long form and live home shopping.
Persia/Persian is more or less synonymous with Iran/Iranian. Persia is just the older name whereas Iran is the country's modern name. I think people from Iran call themselves Persian because of Iran's negative image in the west since the 1979 revolution.
The name Persia. Persia has long been used by the West to describe the nation of Iran, its people, or its ancient empire. It derives from the ancient Greek name for Iran, Persis. This in turn comes from a province in the south of Iran, called Fars in the modern Persian language and Pars in Middle Persian.