We have never really seen the full force of a super power country. It would devestate the world to a point of no return. I could see three things that would happen.
1. The country that invaded would be the supreme .
2. It would start a whole new arms race.
3. We would decide to cut back ever bodies military and weopons depots.
I would hate for this to happen but one day it possibly could.
Let me know what y'all think
if that was the case, the chinese will be on top. with man power they have, it would take long to march on top of country, at least a neighboring country. i highly dought they could get across the pacific with loosing a lot of troop transport ship or even by air due to our fighter jets, tomahawk cruise missles, ship mounted patriot type ground to air missles and so on. the only way to get in by air would be to come from the north pole and make sure their planes are squaking on a civilian airliner freg. to mask them.
it would be vertually impossible for any country to build a strong enough force to walk in and take a big country over. it would take multiple nations to mass on 1 country at a time and continue to keep advancing. just dont out run your supply lines like the krauts did when they invaded russia