If this is a riddle and a pun then his name was Donald Trump.
These riddles usually revolve around the idea that it's meant for the current president of the United States since his name was Donald Trump even in 1996. If it wasn't a riddle and the the question was better made to ask what was the name of the president at that time, then the answer would be Bill Clinton, but since it's a joke then it's the name of the current president.
The United States practiced a capitalism. The United Soviet Socialists Republic practiced socialism.
Trust
A trust was a group of companies legally bound together.
Four traditions related with African Americans are combined due to jazz. It means that jazz is the main cause of combination of different traditions of African Americans. These traditions were related with the music industry. As a result different types of music related things were given to the music industry.