Korea has long been known for lightning-fast internet and mobile broadband speeds. Now the country’s startups are also garnering global recognition. In the last 12 months Korean founders have been backed by the likes of Y Combinator, Tech Stars, Sequoia Capital, Altos Ventures, and Formation 8. Two local ventures also achieved ‘Unicorn’ status (a valuation of $1Bn or more) earlier this year. Kakao Talk, the country’s dominant mobile social platform is now valued…