Before revision: Some events organized over time include: 2017: In Philadelphia, USA where 1,217 people died of opioid overdose that year (the highest death rate of any major U.S. city), there were calls for an overdose prevention site in 2018.
After revision: Some events organized over time include: 2017: In Philadelphia, United States where 1,217 people died of opioid overdose that year (the highest death rate of any major U.S. city), there were calls for an overdose prevention site in 2018.