Worlds together, worlds apart : [a history of the world] /
Tignor, Robert L.
New York ; London : W.W. Norton & Co.,
c2011.
Subtitle from cover.
Also available as one volume.
Includes Internet access code.
Includes bibliographical references and index.
v. 1. Beginnings through the fifteenth century -- v. 2. From 1000 CE to the present.
World history.
Civilization