the largest government class-action settlement in American history, with more than 300,000 beneficiaries.

Elouise Cobell, whose Blackfeet name was Yellow Bird Woman and who has died aged 65, sued the United States government for billions of dollars plundered from American Indian lands – and won. 

14 years; 3,600 court filings; 220 days of trial; 80 published court decisions and 10 appeals, Elouise Cobell's campaign ended in victory in 2009.  

http://www.telegraph.co.uk/news/obituaries/politics-obituaries/8834956/Elouise-Cobell.html