This city is going to have to be our first cossack target, as once we declare war, we may lose our horse supply as I'm not sure the sea trading counts on different oceans (actually later map trading confirms different oceans)?
Izzy is a backwards old dear and I trade her Theology for Compass and some cash.
Old Washington has Gunpowder as well, so may be able to get this at some stage.
Anyway, on with the show.
I start building a few longbows for garrison duty once the cossacks have taken over cities.
I also trade Huayana Philosophy for Machinery.
We grab Military Tradition from Liberalism, Gunpowder in 7.
Hatty, Washington, Huayana and Kublai have Guilds. There will be Knights about. Huayana has Engineering which could be useful as well.
Look who showed up, the lengths some people will go to check out our game

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Heroic Epic completes 1 turn before Gunpowder due.
1330AD is the big year of Gunpowder. I stop here to hand off this.
I have selected Printing Press as next research target but we could just as easily go Engineering. Research is dialed down to 0% as we have 3 horse archers we can upgrade.
I think we should amass cossacks as quickly as we can (whip them mercilessly) and declare when we have 2 groups of 4 or so, something like this. We should leave one or two cossacks at home for protection as well.
We don't really need any seige but what we do have should head towards the Egyptian capital maybe. We should have support troops to fortify taken cities.
Not sure if we should stop trading at this point. We can pick up Engineering (for Nationalism and Drama) and Guilds (for Gunpowder). We should probably self research Engineering.
So, let's agree on a battle plan.
Ralph is UP.