• “MAR tracks 284 politically-active ethnic groups throughout the world from 1945 to the present — identifying where they are, what they do, and what happens to them.”

• “The Armed Conflict Location & Event Data Project (ACLED) is a disaggregated conflict collection, analysis and crisis mapping project.”

Biografías Líderes Políticos (Only in spanish)

• biographies of political leader. even if you cannot read Spanish it is very useful to find their birthplace, ethnicity and so on.