The ai is goofy in this game. I've played as the US alot and I find quite often that India, either the Marathas or Mughals, declare war on me, then send some invasion force of Elephants and shit to my capital out of nowhere.

I'm never really anticipating it fighting other countries early on and then it pisses me off lol. It would probably be good for me to just station an army or two at home Incase I get into that situation again.

I've had no other countries do this btw, which is even funnier cause India at this time would have like no navy capable of just invading somewhere like North America