The Rise and Fall of the Great Powers

The book starts at the dividing line between the Renaissance and early modern history—1500 (Chapter 1). It briefly discusses the Ming (page 4) and Muslim worlds (page 9) of the time and the rise of the western powers relative to them (page 16). The book then proceeds chronologically, looking at each of the power shifts over time and the effect on other Great Powers and the "Middle Powers".

Kennedy uses a number of measures to indicate real, relative and potential strength of nations throughout the book. He changes the metric of power based on the point in time. Chapter 2, "The Habsburg Bid for Mastery, 1519–1659" emphasizes the role of the "manpower revolution" in changing the way Europeans fought wars (see military revolution). This chapter also emphasizes the importance of Europe's political boundaries in shaping a political balance of power.

The argument in this chapter is not, therefore, that the Habsburgs failed utterly to do what other powers achieved so brilliantly. There are no stunning contrasts in evidence here; success and failure are to be measured by very narrow differences. All states, even the United Provinces, were placed under severe strain by the constant drain of resources for military and naval campaigns... The victory of the anti-Habsburg forces was, then, a marginal and relative one. They had managed, but only just, to maintain the balance between their material base and their military power better than their Habsburg opponents. (page 72)

The Habsburg failure segues into the thesis of Chapter 3, that financial power reigned between 1660 and 1815, using Britain, France, Prussia, Austria-Hungary, and Russia to contrast between powers that could finance their wars (Britain and France) and powers that needed financial patronage to mobilize and maintain a major military force on the field. Kennedy presents a table (page 81, Table 2) of "British Wartime Expenditures and Revenue"; between 1688 and 1815 is especially illustrative, showing that Britain was able to maintain loans at around one-third of British wartime expenditures throughout that period

• Total Wartime Expenditures, 1688–1815: 2,293,483,437 Pounds,
• Total Income: 1,622,924,377 Pounds,
• Balance Raised by Loans: 670,559,060 Pounds, and
• Loans as % of Expenditure: 33.3%

The chapter also argues that British financial strength was the single most decisive factor in its victories over France during the 18th century. This chapter ends on the Napoleonic Wars and the fusion of British financial strength with a newfound industrial strength.

Kennedy's next two chapters depend greatly upon Bairoch's calculations of industrialization, measuring all nations by an index, where 100 is the British per capita industrialization rate in 1900. The United Kingdom grows from 10 in 1750, to 16 in 1800, 25 in 1830, 64 in 1860, 87 in 1880, to 100 in 1900 (page 149). In contrast, France's per capita industrialization was 9 in 1750, 9 in 1800, 12 in 1830, 20 in 1860, 28 in 1880, and 39 in 1900. Relative shares of world manufacturing output (also first appearing on page 149) are used to estimate the peaks and troughs of power for major states. China, for example, begins with 32.8% of global manufacturing in 1750 and plummets after the First Opium War, Second Opium War and Taiping Rebellion to 19.7% of global manufacturing in 1860, and 12.5% in 1880 (compared to the UK's 1.9% in 1750, growing to 19.9% in 1860, and 22.9% in 1880).

Measures of strength in the 20th century (pages 199–203) use population size, urbanization rates, Bairoch's per capita levels of industrialization, iron and steel production, energy consumption (measured in millions of metric tons of coal equivalent), and total industrial output of the powers (measured against Britain's 1900 figure of 100), to gauge the strength of the various great powers.

Kennedy also emphasizes productivity increase, based on systematic interventions, which led to economic growth and prosperity for great powers in the 20th century.

He compares the great powers at the close of the 20th century and predicts the decline of the Soviet Union, the rise of China and Japan, the struggles and potential for the European Economic Community (EEC), and the relative decline of the United States. He highlights the precedent of the "Four Modernizations" in Deng Xiaoping's plans for China—agriculture, industry, science and military—de-emphasizing military, while the United States and Soviet Union are emphasizing it. He predicts that continued deficit spending, especially on military build-up, will be the single most important reason for decline of any great power.

From the Civil War to the first half of the 20th century, the United States' economy benefited from high agricultural production, plentiful raw materials, technological advancements and financial inflows. During this time the U.S. did not have to contend with foreign dangers.[6] From 1860 to 1914, U.S. exports increased sevenfold, resulting in huge trade surpluses.[7] By 1945 the U.S. both enjoyed high productivity and was the only major industrialized nation intact after World War II. From the 1960s onward, the U.S. saw a relative decline in its share of world production and trade.[8] By the 1980s, the U.S. experienced declining exports of agricultural and manufactured goods. In the space of a few years, the U.S. went from being the largest creditor to the largest debtor nation.[9] At the same time, the federal debt was growing at an increasing pace.[10] This situation is typical of declining hegemons.[11]

The United States has the typical problems of a great power, which include balancing guns and butter and investments for economic growth.[12] The U.S.' growing military commitment to every continent (other than Antarctica) and the growing cost of military hardware severely limit available options.[13] Kennedy compares the U.S.' situation to Great Britain's prior to World War I. He comments that the map of U.S. bases is similar to Great Britain's before World War I.[14]

As military expenses grow, this reduces investments in economic growth, which eventually "leads to the downward spiral of slower growth, heavier taxes, deepening domestic splits over spending priorities, and weakening capacity to bear the burdens of defense."[15] Kennedy's advice is as follows:

The task facing American statesmen over the next decades, therefore, is to recognize that broad trends are under way, and that there is a need to "manage" affairs so that the relative erosion of the United States' position takes place slowly and smoothly, and is not accelerated by policies which bring merely short-term advantage but longer-term disadvantage.[16]

The book has twelve maps, forty-nine tables and three charts to assist the reader in understanding the text.