Usain Bolt has helped a country.
Jamaica ( [ dʒəˈmeɪkə ] ) is an island country situated in the Caribbean Sea , consisting of the third-largest island of the Greater Antilles . Jamaica is the fourth-largest island country in the Caribbean , by area . Usain Bolt . He has helped Jamaica to three 4 × 100 metres relay world records , with the current record being 36.84 seconds set in 2012 .