>Can Naples create the Royal Palace of Caserta? If yes is it behind a certain date/ advance?

Time travelling to the 18th century:

>>2078717
>Why does Nepal have such a monstrous manpower pool? With the professional army he could maintain with it, he could simply conquer Europe.

That's not the manpower, that's the Relative Power, which also accounts for levies. This is the starting manpower: