Expiration date for optimal safety.

Donald Trump's use of social media attracted attention worldwide since he joined Twitter in May 2009.

Electric car use by country varies worldwide, as the adoption of plug-in electric vehicles is affected by consumer demand, market prices, availability of charging infrastructure, and government policies, such as purchase incentives and long term regulatory signals (ZEV mandates, emissions regulations, fuel economy standards, and phase-out of fossil fuel vehicles).

This article includes the table with land use statistics by country.

The use of firearms by police forces varies widely across the world, in part due to differences in gun use policy, civilian firearm laws, and recording of police activity.