The world War of the 20 century led to what?

Explanation:

Following the 19th century, 20th-century events changed the world in unprecedented ways. The World Wars sparked tension between countries and led to the creation of atomic bombs, the Cold War led to the Space Race and creation of rockets, and the World Wide Web was created.

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.

independent innovation during the abbasid caliphate