I read the most amazing article about how difficult it would be to invade the United States. First, we are the 3rd largest country behind Russia and Canada with 4 time zones and variable environments so invaders would have to go through deserts, mountains, swamps, forests, and farmlands, not counting Alaska or Hawaii which would be easier to invade by themselves (Remember Japanese did attack those areas first, but not the Continental Coast). 2nd is we have 2 long coastlines and all land is bordered by Canada and Mexico who are our allies when Trump is not president. If D-Day is evidence of difficulty of a coastal invasion, remember that British Isles were 3-hour boat ride across the English Channel from Normandy. 3rd would be our weapons and technology: like computers, smartphones, GPS, Interstate Highways, drones, nuclear arsenal, satellites, stealth bombers, and don't forget all the forts, naval bases, aircraft carriers, ships, and submarines guarding the coastlines. We track hurricanes for days, detect solar storms and asteroids, and can detect the location of earthquakes in the middle of the Pacific Ocean to warn the west coast of tsunamis, so we would be ready for any great force coming to invade. And finally 4th, the American People. We have skilled military returned from wars in other countries. Then we have gun bearing private citizens thanks to the 2nd Amendment. And finally, we come together under stress like during Covid and 9-11 proving the American spirit. Probably explains why we haven't been invaded since 1812, unless you count the Civil War which took 4 years to end when America was half the size it is now.
