Yeah, But the US is a federation of States. It's not that deep to understand. A member of the EU can move freely from country to country just like people can do the same from state to state in the US. The difference is that you can cross France and reach Barcelona from Paris in the same time it takes to drive the distance of Los Angeles to Las Vegas, roughly 6 hours by train. Except Paris and Barcelona (1000 miles) are 3 times further apart than those two US cities (300mi). Infrastructure has a great impact in perception of space and distances. The US is not that big, but it can seem to be when the most common transportation method is the least efficient. Each state is about the same average size as most countries in the world. It's just that their transportation infrastructure (including highways) suck ass.
Even driving the highways let you do the distance in 10 hours. Twice the time but three times the distance.
Even then, being a small country doesn't stop the French from knowing that Africa is not a single country.
"Texas is larger than France" means nothing. My country is larger than Texas, and one of my states is larger than Switzerland but also larger than North Carolina. That's a non argument, that's just physics. Again, size is not some exceptional property of the US.