I honestly love it when such profoundly misinformed statements are put forward with absolute authority like this.

a single history

You know that half the country went to war with the other half, right?

a single government

In California, you can order weed through an app and get it delivered to your front door. In Idaho, get pulled over after picking up for the month, you’re a felon.

a single language

Single official language sure. At my work I’m the only native English speaker and a majority of our customers are foreigners who speak little English.