The correct answer is <span>the breakup of Yugoslavia in 1991
Yugoslavia started breaking up because of ethnic and religious tensions in the area. Several parts of the country started seceding from Yugoslavia and declaring independence, and Yugoslavia wanted to keep the borders intact. This led to the majority of 90s being a war era which only ended in 1999 after the bombing.</span>
<span>Trade routes that developed on the Arabian
Peninsula opened Arabia to goods and ideas from many parts of the world. The
route enabled the flow of products and inventions from 3 continents. It also connected
Arabia to major trade centers which had a huge commercial effect. </span>
Kristallnacht was an important event as it is considered the beginning of the holocaust. Throughout Germany and Austria, a pogrom was initiated by the Nazis. Synagogues were destroyed and Jewish shops were looted and ransacked. 91 Jews were killed and thousands of Jewish men were taken to concentration camps. This event became known as the November Pogrom or Kristallnacht.
Since the other answers are only relative, the absolute answer would be A
