The leader of the bolsheviks was tolstoy alexander lenin nicholas

Hello There!

The leader of the Bolsheviks was Lenin.

Vladimir Lenin was the founder and the first leader of the Union of Soviet Socialist Republics "USSR"

He was born on April 22, 18870.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering