What did George Kennan's
Long Telegram advise the US
about the approach of the
Soviets?

In the “Long Telegram,” Kennan emphasized that the Soviet Union did not see the possibility for long-term peaceful coexistence with the capitalist world and that the best strategy was to “contain” communist expansion around the globe.

Explanation:

norsemen from northern countries had made earlier journeys

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.