This park is the lynchpin of the nation. If it were removed, the whole country would fall apart.

OK, maybe not, but it is an important spot. The domed courthouse above heard the infamous Dred Scott case, which was used by the Supreme Court to take the country backwards, deny people their basic rights and help spark the Civil War. (How times change). The arch represents a gateway to western expansion, facilitated by Jefferson’s Louisiana Purchase in 1803 and subsequently explored by Lewis & Clark from here.

Many factors came together for the territory to wind up as ~12 US states. France traded with the Native Americans who lived there, and all along the rivers there were French communities, from Pittsburgh to St Louis and from Quebec to New Orleans. Shortly before we became independent, Britain declared war on France, used their ships to take Quebec and blockaded Spain from their colonies, and in exchange for peace, they took Canada and Florida, while France kept Haiti and Spain wound up with the Louisiana territory.

That peace treaty didn’t last long. The British heavily taxed the colonists to pay for that war (bad idea), the US declared independence (and won), the slaves in Haiti revolted (and won), Spain secretly gave Louisiana back to France, and France & Spain were preparing to invade England (and lose). Amidst this chaos, Napoleon wanted cash more than colonies that he couldn’t control, and Jefferson wanted to secure the Mississippi and expand our new country. Both sides approached each other to make a deal.