B. an increase in the overall temperature of the Earth
I say this because the polar ice caps on the poles are melting (which is why the polar bear is now endangered.) and are a result of global warming.
Kievan Rus was a loose federation of East Slavic and Finnic peoples in Europe from the late ... He extended his control from Novgorod south along the Dnieper river valley to protect trade from Khazar incursions ... In the south, in the area around Kiev, were the Poliane, a group of Slavicized tribes with Iranian origins
It's B
Kilograms literally means Thousand grams..
So, 7.2 thousand grams -- 7,200 grams
Link to Answer https://sashamaps.net/docs/maps/list-of-western-countries/
Explanation:
The St. Lawrence seaway helped because it was large enough to allow shipping transportation to the USA. Which allowed Canada and the USA to trade goods. The seaway extends from Montreal through the Welland Canal in Ontario, Canada, to the eastern portion of Lake Erie.
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