Why would we see a sudden rise in U.S. government bond prices? Multiple Choice Bond prices can only rise when interest rates go up. Bond prices can't rise or fall because they are always stable. If there was a sudden surge of bad economic news like higher unemployment, an increase in destructive natural disasters (9.0 earthquake in San Francisco or L.A.), or the start of new wars around the world, such as China attacking Taiwan, Russia attacking other East European nations such as Poland, or Iran dropping an atomic bomb on Israel. If we had a sudden explosion of good economic news like lower unemployment, a booming stock market, or the signing of a new international peace treaty between Israel and Iran