Why did Thomas Edison vow that he would work only on ideas for things that people would buy? a) only things that people will buy produce a social benefit.

b) he wanted to hold the record for registering the most patents.

c) only ideas that people will pay a high price for are protected by patents.

d) no government would buy his first patented invention.

At present, the united states has an embargo against north korea because a. the two countries have extremely poor political relations. b. north korea will not adopt a capitalist government. c. north korean products are too difficult to use. d. north korea has an embargo on american products. e. products from north korea are in higher demand than american-made products.