The document provides an overview of the human geography of Russia and surrounding republics. It describes how Russia expanded greatly between 1500-1900, incorporating a diverse array of peoples and cultures. It then discusses three main regions in more detail: 1) Russia and the western republics, which have a history of expansion and incorporation into the former Soviet Union; 2) Transcaucasia, a culturally diverse region and historical gateway between Europe and Asia with economic potential from oil and gas; 3) Central Asia, a historical crossroads on the Silk Road that is working to establish stability after the Soviet era despite borders drawn by Soviet officials.