After the second world war, US became the most powerful country in the modern world. With nuclear weapons, space explore, big scientific progress. But what can be the reason for this huge power ? Military power ? Strong economy ? Diversity in society ? Or something else ?
Because they have the best and most advanced technology than to other countries I guess, they can provide good qualities of weapons and also then have a lot of professional persons in every aspect of professionalism. They have the most advanced teaching of learnings that's why the US is the most powerful country in the world.