Which modern country has undergone the most dramatic territorial changes between 1650 and the present?

Historians are concerned with the accuracy of their writings and readings but are also aware of the inability of authors to know every angle of every story biases, perspectives, beliefs, and a variety of other differences history being told by one person at a time no one being totally accurate, as hard as we try really need on this, and you^^

How did the united states surprise other delegates at the washington naval conference in 1921

Which areas where seperated by the iron curtain