<P> The Age of Revolution is the period from approximately 1774 to 1849 in which a number of significant revolutionary movements occurred in many parts of Europe and the Americas . The period is noted for the change in government from absolutist monarchies to constitutionalist states and republics . The Age of Revolution includes the American Revolution, the French Revolution, the Irish Rebellion of 1798, the Haitian Revolution, the revolt of slaves in Latin America, the First Italian War of Independence, Sicilian revolution of 1848, and the 1848 revolutions in Italy; and the independence movements of Spanish and Portuguese colonies in Latin America . In a way, it includes the Industrial Revolution . The period would generally weaken the imperialist European states, who would lose major assets throughout the New World . For the British, the loss of the Thirteen Colonies would bring a change in direction for the British Empire, with Asia and the Pacific becoming new targets for expansion . </P> <P> The Industrial Revolution was the transition to new manufacturing processes in the period from about 1760 to sometime between 1820 and 1840 . It marked a major turning point in history and almost every aspect of daily life was influenced in some way . In particular, average income and population began to exhibit unprecedented sustained growth . This led to the expansion of cities that was so rapid, it resulted in social strains and disturbances . For instance, economic grievances associated with this industrialization fed later revolutions such as those that transpired from 1848 . New social classes emerged including those that began to reject orthodox politics . This is demonstrated by the rise of the urban middle class, which became a powerful force so that they had to be integrated into the political system . The upheavals also led to new political ideas that were directed against the social arrangements of the preindustrial regime . </P>

The american revolution was important in world history because
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