Amount of countries in the last 2500 years

this is a chart of the amount of countries in the last 2500 years. Now they are 196 countries in the world in 2024, how how many were there 2500 years ago, or 1000 years? I'd tell you that in this chart. In this quiz. Between the years 500 and 1600 there can be information that is nog totally right, but there is just not very much information about that.