What factors led to napoleons defeat in russia?

The two major factors that led to Napoleon's defeat in Russia were 1) Russia's massive physical size (since it was impossible for his men to cover enough ground, and 2) the brutal winter that left many of his men sick or dead. 

The  pan-african movement  was an "emotional, cultural, psychological and ideological  movement  that began among the  african  dispora in the western hemisphere, for a closer  purpose, so that  african  people could feel secure, attain political, economic as well as psychological power visa vis other races or world regions" .