[Hermann the Cherusker]

Just as Southerners discovered after the Civil War, the victorious power has the right to dispose of your property in any way he deems fit.

France discovered learned this after the Franco-Prussian War when Germany annexed Alsace-Lorraine.

Germany learned the same lesson after WWII, when it was forced to cede East Prussia to Poland.

You are confusing "rights" with "power". There is certainly nothing in the rules of conduct of the civilzed nations of the world which allows for mass dispossesion and expulsions. And only in the last case, East Prussia, was their a wholesale disposession and expulsion of the native inhabitants by the conquerors.

Either we believe in property rights, or we believe in the rule of the strongest with the most guns.

[quadrant]

You are incorrect.
Until after World War II the concept of mass deportation was a political and diplomatic tool used often employed and was considered quite humane.
The term used was population transfer.
Diplomats considered that it was better to resettle a restive population in another area rather than allow it to remain in an geographic area that being annexed by conquest or political settlement by another power.
If you want to read more about this, I suggest PARIS, 1919 by Margaret Macmillian, a book which details the machinations that led to the Versailles Treaty that ended WWI.
In fact, problems arose when population transfer was difficult or impossible, as in the case of the Sudetenland or in the Balkans.

And I do not confuse "rights" with "power". "Rights", however natural, do not exist in a vacuum. "Rights" are not self-enforcing, nor can they exist in a state of anarchy.
"Rights" depend for their existence on the protection of the state. For this reason we have a Bill of Rights attached to the Constitution, the political document that established the government (the state) under which we live in this country.
Property rights are rights as real and valid as the right to speak or worship. In fact, I believe property rights are the essential element that separates a free state from a tyrannical one.
Power is a more subtle concept and too long to be detailed here. However, it can be one of raw force, a who-whom relationship when the a police officer arrests a criminal. Power can be a voluntary action, as when one submits willingly to the orders of a superior officer in the military.
Or power can spring from an elective decision, as when the cardinals submit to the authority of a brother they have just elected pope.