Demand It - a mod for people who want things and want them now.
With this mod, you get a GUI with three options, demand a state, demand vassalization, and demand tribute.
Demand A State - cost 250 political power, will send a demand to the selected country asking for control over a selected state, the chances of the country agreeing to your demands are based on how powerful you are compared to them.
Demand Vassalization - cost 300 political power, will send a demand to the selected country asking them to become a puppet government under you. Once again, the chances of the country agreeing to your demand is based on how powerful you are compared to them.
Demand Tribute - cost 50 political power, sends a demand to the selected country asking for a show of support if the country accepts then you will receive either a boost to production, a boost to research, or a boost to political power gain.