The answer is the growth of the mass media. 1920s was called as the formation of modern American
mass culture. During the 1920s, the mass
and consumer culture radio and motion pictures emerged and created a new era to
the American culture. This was the time
of mass media like television and radio.
They are known to mark the end of islamic golden age. Therefor you answer is they brought the islamic empire down.
Answer:
The theory was that Polynesia “lay within the range of pre-European mariners from South America.” Now go and get that A+ :)