The nationalization of key industries in countries such as sweden and india are indicative of a(n) economy.

The nationalization of key industries in countries such as Sweden and India are indicative of a socialist economy.  A socialist econmy is one where there is social ownershiper and operation that controls production.  Within socialist societies, the market allocates all of the input and outpus for goods.  This type of economy is usually more structured and planned over other types of economies.

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.