Live from Abu Dhabi Connect the World takes you on a journey across continents, investigating the stories that are changing our world.
With Twitter's debut on the Stock Market, we ask where it all began and how did it get to be such a powerful presence in the world.
Watch: How does Twitter make money?
From Twitter town halls to the Pope's first tweet, CNN's Atika Shubert looks back at the major milestones of Twitter.
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