The 2017 demonstrations in London responding to U.S. President Donald Trump's threats against North Korea provide an example of __________.

Think tanks are 501(c)(3) organizations because

a. contributions to them are tax-deductible. b. membership dues cannot be used to support federal candidates, but general contributions to the organization can be used as campaign donations. c. they may not contribute to a federal candidate, but they are allowed to advocate specific legislative positions. d. they pay a fee to the government in return for loose regulations on their activities. e. they pay income tax.

Why is it sometimes difficult to use fiscal policy to regulate the economy?

A. Federal spending cannot be easily adjusted up or down as economic conditions change. B. Decisions about how much government should spend are made by a very small group of people. C. Changes in spending and taxes can occur very quickly before many economists can agree on what the problem is. D. Decisions by Congress to lower the discount rate to federal banks are a cumbersome process. E. Checks and balances provided for in the Constitution require agreement among all three branches regarding a course of action.