How was northern society different from southern society?

Northern was an industrial society, while the South featured small farms around numerous large cities.
Northern society became more diverse than southern due to heavy immigration through northern ports.

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" .

Which reforms did gandhi initially promote when he joined the national congress