ELI5: Explain Like I'm 5

Pig War (1859)

Once upon a time, a long time ago in the year 1859, there was a small group of people living on an island called San Juan Island. This island was located between the United States and Canada, and both countries claimed that it belonged to them.

One day, an American man who lived on the island, and a few of his friends, decided to let their pigs roam free in the woods. They thought it was okay to let their pigs eat acorns and other things on the Canadian side of the island because they didn't know any better.

But the Canadian people who lived on the island got really mad when they saw the pigs on their side. They thought it was very disrespectful for the Americans to let their pigs eat their acorns. So, they decided to chase the pigs back to the American side.

But when the American man saw the Canadian people chasing his pigs, he got really angry too. He thought it was unfair for the Canadians to chase his pigs around.

So, both the Americans and the Canadians kept arguing about whose pigs were allowed to be where, and the argument soon became out of control! Suddenly, both sides started to build forts and bring in more soldiers, as if they were going to go to war over some silly pigs!

Luckily, the leaders of the United States and Canada were able to solve the problem peacefully. They finally agreed that the island was going to belong to the United States, but the Canadians got to keep fishing rights around the island.

And that's how the pig war ended, without any actual fighting. It's a silly story, but it shows how sometimes, arguments can escalate into much bigger problems.