 Investing in megaprojects in order to stimulate the general economy has been a popular policy measure since the economic crisis of the 1930s.Recent examples are the 2008–2009 Chinese economic stimulus program, the 2008 European Union stimulus plan, and the American Recovery and Reinvestment Act of 2009.Megaprojects often raise capital based on expected returns—though projects often go overbudget and over time, and market conditions like commodity prices can change.