What makes country a superpower?

Answer 1

The country has a large economy and is also a powerful country politically and militarily. The country has an abundance of natural resources and nuclear power. It also has a dominant position and ability to influence events and its own interests.

Answer 2

Prior to WWII; a powerful navy made a super power. Without a navy, the country (nation) could not project it's military might (could not land armies on foreign lands). After the invention (use) of the atomic bomb in 1945; a nation with the "bomb" was considered a super power. By the 1960's a nation had to have BOTH a delivery system and the bomb in order to be classed as a super-power. Without some form of delivery system, atomic weapons were nearly useless (no country wanted them detonated on their own territory!).