Mullin compares US debt to... Cavemen and Vikings?

2nd District Congressman Markwayne Mullin recently made a post on Facebook and Twitter drawing attention to the America's sky-high national debt. It's a topic that far too often gets ignored by those in Washington, who keep spending like there's no tomorrow. Our national debt poses a greater threat to America's future than most other, commonly-identified dangers.

However, the way in which Congressman Mullin brought up the topic is rather.... strange. His post read as follows:

The U.S. government currently owes more money than ANY other government in human history! We can't keep going down this path.

The post was accompanied by this image:

Rather than comparing our debt to, say, Greece, France, the United Kingdom, or even past U.S. governments, he decided to go with the "governments" of Colonial, Romans, Vikings, and Cavemen. Beside the Roman Empire, none of those are historical governments, and the graph comparison would indicate that each of those groups owed debts in the trillions.

There's a better way to do this. Next time, use actual figures, not made up numbers with non-historical non-governments.