During the renaissance, italian cities became centers of photography warfare banking transportation

During the Renaissance the cities of Italy became centers of Banking

The correct answer is "banking".

The development of the financial system as we know it nowadays originated in Italy during the period of the Renaissance with the establishment of the Medici Bank in 1397. It had operations in the countries major cities, including Florence, Venice, and Genoa. It became to be "the most respected bank in Europe" as it introduced the concept of the "extension of credit". This involved the practice of granting loans to clients in foreign nations, attracting many wealthy clients to Italy and dynamizing the trade of goods. This would lay a path for the creation of a "luxury market" of goods.

what is the tax base for the sales tax?

it should be (usually ) 6%