What was the primary reason that Russia expanded south into the Caucasus and east into Manchuria?

Question

Quizplus · Accepted Answer

Russia expanded into the Caucasus and Manchuria in response to perceived threats from rivals in those areas. In the Caucasus, Russia was concerned about the Ottoman Empire and Persia, while in Manchuria, Russia was concerned about Japan and other European powers. Acquiring new territories also allowed Russia to increase its geopolitical power and influence. Religion, minerals, and land for serfs were not the primary reasons for expansion into these regions.

What Was the Primary Reason That Russia Expanded South into the Caucasus