"Diplomacy
Victoria has a full flexible diplomatic system based on the concepts from EU1/2 and HoI, with bilateral alliances, limited colonial wars, claims over provinces, and much tied in to the concept of national prestige as the strength in diplomatic actions. Victoria also introduces a complex peace resolution system where claims can be given up, as well as trade deals and resources."
Thats part of the description of Victoria posted on Paradox's main page