[Jack Hydrazine]

It’s similar to the bio-warfare used in the old days when the attacking army would throw cattle carcases over the wall and into the castle.

[SeekAndFind]

Remember when the Europeans brought diseases to the Native Americans where it was not known to them before?

Well, I hope this doesn’t happen again.

[Veto!]

attacking army would throw cattle carcases over the wall and into the castle.

But we don't even have a wall. The Chinese figured out how to build the Great Wall more than two thousand years ago, but apparently we lack the technology.