Refugees
Managed to return a lot of refugees back to their home land.

Working conditions - ILO (international labour organisation) successful in:
Limiting children's working hours.
Banning white lead from paint.
Campaigning for improved working conditions.

Health
Worked to stamp out leprosy.
Campaign to get rid of mosquitoes.

Transport
Recommended marking shipping lanes.
Produced international highway code.
Social Problems.
Blacklisted companies involved in illegal drug trade.
Freed 200,000 slaves in Sierra Leone.
Challenged forced labour for railway building in Africa.
Looked into problems such as slavery, prostitution, and drug trafficking.