Answer:
2007
“Sea ice extent was clearly on its way down, and Arctic temperatures were clearly rising.” “But then came 2007, when September sea ice extent didn't just drop to a new record low, it blew away the old record. In many ways, 2007 was the beginning of the 'new Arctic.
Allowed 'separate but equal,' also known as segregation, to become law in the United States.
Nuclear bombing of the Japanese cities of Hiroshima and Nagasaki were two of the most striking and shocking moments in twentieth-century history. In addition to marking the end of World War II, the terrible events on Japanese soil impacted Japanese society, relations between countries, and the way the world's population came to view international conflicts. In the items below you understand the reasons of such impact on world geopolitics.
Communication was very important because back than they didn't have phones and T.V.s so they had to let people know of the danger soon
