First, little tip ;)

You can not only point to a thread, but directly to a post:

https://www.gog.com/forum/imperialism_series/any_videos_anywhere_of_a_complete_playthrough_of_imp_1/post6

wasn't needed here, but thought maybe worthwhile mentioning ;)

8. Is quite often the biggest problem, those damned horses!!!

9. You already made the correction in here ;) (but maybe for the sake of it, change your original post? certain army units?)

11. Be careful with signing certain treaties! Those treaties might get you into wars you don't want! (don't remember the names top of my head, those assist treaties with major nations, pact?????)

12. Never forget the power of blockade. Also sometimes a nice way of increasing your navy.