All 50 states, D.C., and four U.S. territories signed off on the multi-billion dollar settlement proposal with OxyContin maker Purdue Pharma in litigation over Purdue's alleged role in America's opioid addiction crisis.

The suit, brought by 55 attorneys general, will help compensate victims and fund addiction treatment programmes.

All 50 states, D.C., and four U.S. territories signed off on the multi-billion dollar settlement proposal with OxyContin maker Purdue Pharma in litigation over Purdue's alleged…