Answer:
Constantine embraced Christianity. —> Christianity expanded in Rome.
The causes of the Economic Boom of the 1920s were the Republican government's policies of Isolationism and Protectionism, the Mellon Plan, the Assembly line and the mass production of consumer goods such as the Ford Model T Automobile and luxury labor saving devices and access to easy credit on installment plans.
The Nazis wanted to gain recognition of their superior race to the world. Khmer Rouge wanted to have communism in their country.
<span>In The Communist Manifesto, Karl Marx and Friedrich Engels laid foundation for the Communist ideology. They encouraged workers to take control of their own destiny instead of allowing the management to control workers like a class of slaves. At the end of the book, Marx and Engels called workers to rise up together with the rallying cry of "Workers of all countries, unite!" Therefore, the correct answer is A. The Communist Manifesto.</span>
In search of more efficient killing methods, the Nazis experimented with using the hydrogen cyanide-based fumigant Zyklon B at the Auschwitz concentration camp. This method was adopted for mass killings at the Auschwitz and Majdanek camps. Up to 6000 victims were gassed with Zyklon-B each day at Auschwitz.
