What implicit threat is contained in commodore Perry's letter?

I absolutely agree with that statment of territorial losses being the worst punishment faced by Germans in Treaty of Versailles.

Explanation:

Territorial loss is a system where a country is stripped off its rightful lands and areas due to fallout with other countries after a war. After the end of world War 1, Germany lost the war. And, also, they lost most of their territory due to the Treaty they signed with other countries.

The Treaty was to curtail their power and influence in Europe. Despite the treaty being too harsh, what pained the Germans most was the territorial loss to some Allied powers such as Belgium, Cezchslovakia, Poland, East Pressua and renouncement of control of colonies under their care. It is sighted by researchers, that, the territorial loss is part of the reason why German went to war during world War 2.