"For United States annual data that include World War II, the estimated multiplier for temporary defense spending is 0.4–0.5 contemporaneously and 0.6-0.7 over 2 years. If the change in defense spending is "permanent" (gauged by Ramey's defense-news variable), the multipliers are higher by...

A sound and efficient financial system is an indispensable ingredient of economic growth. It consists primarily of banks and capital markets, which channel savings into investments and other productive activities that contribute to economic growth and augment the economy's productive capacity....