---

This book introduces a new approach to macroeconomics based on endogenous market structures (EMSs), with a close focus on business cycles, international trade and policy and growth.

---

This is a key year for the evolution of international markets. The global economy is experiencing the most severe downturn since the thirties, it is temporarily leaving a path of sustained growth that characterized the last decades, and is facing an impressive decline of trade between countries. Banks are going bankrupt, the stock market has crashed, rms are going out of bu- ness or drastically reducing their production and exports, workers are being red and investment in new business creation or innovation is shrinking. Meanwhile, consumers con dence has dropped at its minimum, aggregate demand has been declining for months and expansionary policies and int- national coordination have failed to counteract the crisis until now. It is quite likely that all this will change sooner or later, but at the end of this crisis our understanding of the macroeconomy may change as well. In front of these crucial events, this book is not an attempt at proposing a radically new way of interpreting macroeconomic phenomena, and, as a m- ter of fact, it is not even a book on macroeconomic theory. My more modest goal is to collect a number of insights derived from recent research on the role of competition and innovation in the analysis of three topics: business cycles, trade and growth through innovations.

---

Neoclassical Macroeconomics.- The EMSs Approach to Macroeconomics.- Endogenous Market Structures and Business Cycles.- Endogenous Market Structures and International Trade and Finance.- Endogenous Market Structures and Growth.- Economic Principles and Policy for the New Economy.

---