Only a few sellers, each offering a similar or identical product to the others. Monopolistic Competition. Many firms selling products that are similar but not identical. A duopoly is an oligopoly with only two members.
That, my friend. Is a good question. The Veterans mostly did get GI bills. They of course did get homes (Unless they were stupid) They got them on their own. It's still the USA of course, gotta get stuff done yourself.
The first christian emperor was A Constantine
The Electoral College was created for two reasons. The first purpose was to create a buffer between the population and the selection of a President. The second as part of the structure of the government that gave extra power to the smaller states.