Written and introduced by Professor Marcus Cunliffe.

In 1790 four million Americans farmed and traded in a narrow strip of thirteen states on the eastern sea-board of a largely unexplored continent. By 1910 ninety-two million Americans in forty-six states inhabited the most powerful industrial nation in the world.
This series of ten programmes tells the story of this unparalleled explosion of political and economic power.
(Previously shown on BBC-1)