Master card-Visa card

MasterCard and Visa are networks of banks and financial institutions. American Express is its own company and Discover Card is a subsidiary Morgan Stanley (who is spinning off the business).Visa was originally called BankAmericard, a card offered by Bank of America in 1958 in California. By 1970, they had created an association, called the National BankAmericard, Inc., of all the US Banks that issued the BankAmericard. It wasn’t renamed to Visa until 1976.
Visa actually stands Visa International Service Association