【单选题】The United States of America ( USA ), commonly known as the United States ( U.S. ) or America , is a constitutional federal republic composed of ____ states , ____ federal district , five major self-g...
【单选题】Suppose a wave of investor and consumer pessimism in the USA causes a reduction in spending. If the US Federal Reserve (which has a broader remit than the Bank of England which is charged only with co...