A country can be said to have a lot of international influence if it has considerable

• Money
• Military strength
• Resources

The area and population of a country also affect a the importance of a country.

A superpower is a country which has significant influence in the world. The U.S.A. (United States of America) is the only true superpower left since the break-up of the Soviet Union. Japan is sometimes considered a superpower due to its economic strength.

Alliances can make individual countries into a group that has international influence. The European Union, for example, has a combined population and wealth which is greater than the U.S.A.