The Country which flourishes in the Trade and Commerce would automatically turn into a financial power and then into a Military Power and then into Super power.
Since, the beginning of the 15th Century, the British started trading with all parts of the World and slowly started conquering the world and soon became the super power of the world. Their financial power turned into Military power.
After the Independence of USA from British, they started growing as a business power and by the start of 20th Century they become the center of world trade. The free society and vibrant democratic system of the USA attracted the Investors, Professionals and Business-mans all over the world, to live and do business. Their rule of the law atmosphere has made USA a conducive place for Investing.
Soon USA grew as a financial power and then it slowly grew as a Military power and by another fifty years it is the only super power in the World.
Any country which is growing financially would one day become a financial power and then into a Military power and then as Super Power. In the present days, China followed by India has started growing as Financial powers. G-8 Grouping lost its significance and G-20 grouping has become the new power bloc of the world which includes China and India.
If the financial growth is sustained in China and India in years to come, then surely these two countries are likely to be the Super Powers after USA.