Misc: Which economist wrote 'The Affluent Society'?

Questions

Countries of the world, southern shore of Arabian peninsula, Sana'a is the capital?

33 atolls in mid-Pacific Ocean, Tarawa is the capital?

Central America, Tegucigalpa is the capital?

central Pacific Ocean, southwest of Hawaii, this island is covered in phosphate, it's principal export?

Warsaw is the capital of what country?