Problem: 
The method of self-exertion or "self-power"—without reliance on an external force or being—stands in contrast to another major form of Buddhism, Pure Land, which is characterized by utmost trust in the salvific "other-power" of Amitabha Buddha. Pure Land Buddhism is a very widespread and perhaps the most faith-orientated manifestation of Buddhism and centres upon the conviction that faith in Amitabha Buddha and the chanting of homage to his name liberates one at death into the Blissful (安樂), Pure Land (淨土) of Amitabha Buddha. This Buddhic realm is variously construed as a foretaste of Nirvana, or as essentially Nirvana itself. The great vow of Amitabha Buddha to rescue all beings from samsaric suffering is viewed within Pure Land Buddhism as universally efficacious, if only one has faith in the power of that vow or chants his name.
What Buddha vowed to rescue all beings from samsaric suffering?
The answer is the following: Amitabha

Problem: For those that remained under the Ottoman Empire's millet system, religion was the defining characteristic of national groups (milletler), so the exonym "Greeks" (Rumlar from the name Rhomaioi) was applied by the Ottomans to all members of the Orthodox Church, regardless of their language or ethnic origin. The Greek speakers were the only ethnic group to actually call themselves Romioi, (as opposed to being so named by others) and, at least those educated, considered their ethnicity (genos) to be Hellenic. There were, however, many Greeks who escaped the second-class status of Christians inherent in the Ottoman millet system, according to which Muslims were explicitly awarded senior status and preferential treatment. These Greeks either emigrated, particularly to their fellow Greek Orthodox protector, the Russian Empire, or simply converted to Islam, often only very superficially and whilst remaining crypto-Christian. The most notable examples of large-scale conversion to Turkish Islam among those today defined as Greek Muslims - excluding those who had to convert as a matter of course on being recruited through the devshirme - were to be found in Crete (Cretan Turks), Greek Macedonia (for example among the Vallahades of western Macedonia), and among Pontic Greeks in the Pontic Alps and Armenian Highlands. Several Ottoman sultans and princes were also of part Greek origin, with mothers who were either Greek concubines or princesses from Byzantine noble families, one famous example being sultan Selim the Grim, whose mother Gülbahar Hatun was a Pontic Greek.
What moniker did the Greeks grant themselves for distinction ?
The answer is the following: The Greek speakers were the only ethnic group to actually call themselves Romioi

Problem: By 1938 the United States Navy had developed an electromechanical analog computer small enough to use aboard a submarine. This was the Torpedo Data Computer, which used trigonometry to solve the problem of firing a torpedo at a moving target. During World War II similar devices were developed in other countries as well.
When did the US Navy invent an electromechanical computer to use on a submarine?
The answer is the following: 1938

Problem: But by the 1940s, many of Boas' anthropologist contemporaries were active in the allied war effort against the "Axis" (Nazi Germany, Fascist Italy, and Imperial Japan). Many served in the armed forces, while others worked in intelligence (for example, Office of Strategic Services and the Office of War Information). At the same time, David H. Price's work on American anthropology during the Cold War provides detailed accounts of the pursuit and dismissal of several anthropologists from their jobs for communist sympathies.
What groups formed the Axis forces?
The answer is the following:
Nazi Germany, Fascist Italy, and Imperial Japan