What was primarily at issue in the Spanish-American war?

There were 3 main reasons. One was that America was helping Cuba to become independent of Spain. The second reason was because upon arival to Spain, the U.S.S. Maine (one of Americas ships) blew up in one of Spains harbors, and was associated with foul play on the behalf of Spain. The third reason was Yellow Journalism (defined by google as "journalism that is based upon sensationalism and crude exaggeration.")

the hereditary right of a monarch to rule from the mandate of heaven

following type of cultural development caused people to want and buy new products on the market :