This book systematically explains why some countries are democracies while others are not.

Daron Acemoglu is Charles P. Kindleberger Professor of Applied Economics at The Massachusetts Institute of Technology and a member of the Canadian Institute for Advanced Research's Program on Institutions, Organizations, and Growth. He received the 2005 John Bates Clark Medal awarded by the American Economic Association to the best economist working in the United States under age 40. He is the author of the textbook Introduction to Modern Economic Growth and coeditor of Econometrica and NBER Macroannual.