The petroleum is more superior than coal and wood, mainly because petroleum is easier to transport, and way more efficient. Petroleum is used for fire, and of course in cars which every country has and every car needs petroleum.
This is a bit of a complicated subject, but in general when the Czechs tried to implement liberal reforms in 1968 they were not implemented very quickly and were met with resistance.
C is the correct answer because the Aborigines were not immune to European diseases
Explanation:
The Cold War was a period of geopolitical tension between the Soviet Union and the United States and their respective allies, the Eastern Bloc and the Western Bloc, after World War II. The period is generally considered to span the 1947 Truman Doctrine to the 1991 dissolution of the Soviet Union.
I hope this help!!
