More enemies and they are close with fast units
Preturn: Only change is to skip walls for Seatle. It is protected by mountains so should not be attacked.
IBT: Several attacks from different directions. loss of a unit
1200 AD: Capture Boston without loss.
1225 AD: Kill random units. Get a Monk and expand Virconium's Border for insta-wine and get the Deer as well.
We meet Poland
1250 AD: Move on for attack on Seattle.
1275 AD: Seattle is Destroyed. Wasn't paying close enough attention, but I think it was just planted. Also spot Chicago.
IBT: Japan has started showing up. Moved most troops back from China border.
1300 AD: Start exploring desert looking for Saltpeter.
1320 AD: Poland has already shown up in big numbers near Chicago. I attack one unit next to the city but the defense 1 unit red-lines our 6 hp attacking Elephant. Chigago will almost certainly fall to Poland.
I pillage Mountain square near China to slow them down.
Notes:
(Turn 155) Will stop here - running low on time (going on a trip this weekend) and we can discuss Poland strategy.
You can see the US border with ctrl M/ctrl N - I marked on the map.
We have a monk near Philadelphia so we can expand a border to slow Poland - I think Washington and Philadelphia border should meet if we do.
If we lose the city (expected) we should be able to take it back in the near future, but other Polish units plus skirmishes in the south with Japan and China will be annoying.