Author Adam Nicolson traces the roots of today's globalised Britain to a 17th-century golden age of writing and communication. He reveals a century on the move, a time when London tripled in size and more than200,000 people emigrated in search of work or God. And it was writing that made this new mobility possible.Through the very words that kept them afloat in this mobile world, we meet a puritan family split asunder across an ocean, a lowly sailor able to document strange new worlds for those at home and a slave-trader laying the foundations for a new world economy. All these characters remoulded the medieval world into the one we recognise today. Their writings both reveal this turbulent world to us and helped write the change itself.