What two-word term names the era that began in 1957 with the launch of Sputnik?

What two-word term covers punishments such as spanking a misbehaving child? What two-word nickname is given to precision-guided bombs designed to destroy deep underground command centers? What two-word term describes the U.S. population surge from 1946 to 1964? What two-word term names the long retreat, about 6,000 miles, begun by China's communist Red Army in 1934? What two-word term names the largest, main tent of a circus? What two-word name did American colonists give the laws Parliament passed in 1774 to punish Massachusetts? Which two-word Latin phrase means the existing state of affairs? Which song took the Turtles to No. 1 in 1967?