The Duke Forced His Son To Live In Desolate Lands

In our world, a man was studying for a history exam for college and was transported into the body of a Duke's son exiled to desolate lands to become A feudal Lord of the area. and his new name was Alexander Gray then suddenly a system appeared called the civilization system. After that, Alexander will create one of the most powerful powerhouses in the area. Will he take over the throne of the Empire? Or will he defeat his own family? Or create his own country?