One reason is it helped promote exploration.
Another is communication was faster.
And people learned more about exploration.
On 1 January 1986 Spain<span> and </span>Portugal<span> acceded to the European Economic Community</span>
To govern the citizens, keep the land civil, and stop it from plundering into anarchy. Its to keep order, and keep its citizens happy, just like in Civilizations. To keep your people happy, increases production, and many other important things, that you need.