I see. So the max research limit represents the maximum research capacity of a country at any one time, not the total research points invested for the whole scenario. So for example, the US can do more research at one time than China.
Another question. If you don't invest in anything at all in a category, there would still be a small chance to gain a research level? For example, if Russia never invests in Advanced Subs, they still could get an advancement?
thanks!