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However, William Woodthorpe Tarn, between World War I and World War II and the heyday of the League of Nations, focused on the issues of racial and cultural confrontation and the nature of colonial rule. Michael Rostovtzeff, who fled the Russian Revolution, concentrated predominantly on the rise of the capitalist bourgeoisie in areas of Greek rule. Arnaldo Momigliano, an Italian Jew who wrote before and after the Second World War, studied the problem of mutual understanding between races in the conquered areas. Moses Hadas portrayed an optimistic picture of synthesis of culture from the perspective of the 1950s, while Frank William Walbank in the 1960s and 1970s had a materialistic approach to the Hellenistic period, focusing mainly on class relations. Recently, however, papyrologist C. Preaux has concentrated predominantly on the economic system, interactions between kings and cities and provides a generally pessimistic view on the period. Peter Green, on the other hand, writes from the point of view of late 20th century liberalism, his focus being on individualism, the breakdown of convention, experiments and a postmodern disillusionment with all institutions and political processes.
Who studied the problem mutual understanding between races in conquered areas?
A: Arnaldo Momigliano

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On 17 April 2015, The Sun's columnist Katie Hopkins called migrants to Britain "cockroaches" and "feral humans" and said they were "spreading like the norovirus". Her remarks were condemned by the United Nations High Commission for Human Rights. In a statement released on 24 April 2015, High Commissioner Zeid Ra'ad Al Hussein stated that Hopkins' used "language very similar to that employed by Rwanda's Kangura newspaper and Radio Mille Collines during the run up to the 1994 genocide", and noted that both media organizations were subsequently convicted by an international tribunal of public incitement to commit genocide.
What terms did Katie Hopkins use to describe migrants to Britain?
A: "cockroaches" and "feral humans" and said they were "spreading like the norovirus"

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Solar radiation is absorbed by the Earth's land surface, oceans which cover about 71% of the globe and atmosphere. Warm air containing evaporated water from the oceans rises, causing atmospheric circulation or convection. When the air reaches a high altitude, where the temperature is low, water vapor condenses into clouds, which rain onto the Earth's surface, completing the water cycle. The latent heat of water condensation amplifies convection, producing atmospheric phenomena such as wind, cyclones and anti-cyclones. Sunlight absorbed by the oceans and land masses keeps the surface at an average temperature of 14 C. By photosynthesis green plants convert solar energy into chemically stored energy, which produces food, wood and the biomass from which fossil fuels are derived.
The Earth's oceans cover what percentage of the globe?
A: 71

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On 11 October 1962, the first session of the Second Vatican Council was held in the Vatican. He gave the Gaudet Mater Ecclesia speech, which served as the opening address for the council. The day was basically electing members for several council commissions that would work on the issues presented in the council. On that same night following the conclusion of the first session, the people in Saint Peter's Square chanted and yelled with the sole objective of getting John XXIII to appear at the window to address them.
What speech was given by several council commissions?
A:
unanswerable