Most of Russia’s population lives on the Northern European plain

Which is the best example of a primary source ducument useful in the study of history ?

What was the national government’s biggest concern if facing a war, under the articles of confederation? the national government had no national military. the country had grown too large to defend with a small army. the states would not back the federal government. there was no way the states would pay for fighting a war.

Who were the main leaders of the major powers (france, england, and great britain) during the treaty of versailles?