Here is a question about this article: Gustav had a preference for his elder son, Meinhard (July 17, 1946 May 20, 1971), over Arnold. His favoritism was "strong and blatant," which stemmed from unfounded suspicion that Arnold was not his biological child. Schwarzenegger has said his father had "no patience for listening or understanding your problems." Schwarzenegger had a good relationship with his mother and kept in touch with her until her death. In later life, Schwarzenegger commissioned the Simon Wiesenthal Center to research his father's wartime record, which came up with no evidence of Gustav's being involved in atrocities, despite Gustav's membership in the Nazi Party and SA. Schwarzenegger's father's background received wide press attention during the 2003 California recall campaign. At school, Schwarzenegger was apparently in the middle but stood out for his "cheerful, good-humored and exuberant" character. Money was a problem in their household; Schwarzenegger recalled that one of the highlights of his youth was when the family bought a refrigerator.
What is the answer to this question: What appliance did Schwarzenegger's family buy that he called a highlight of his youth?
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So... refrigerator

Here is a question about this article: The International Organization for Standardization has established a number of standards relating to solar energy equipment. For example, ISO 9050 relates to glass in building while ISO 10217 relates to the materials used in solar water heaters.
What is the answer to this question: ISO 9050 relates to standards for what?
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So... glass in building

Here is a question about this article: The Quran and Muhammad talked about racial equality and justice as in The Farewell Sermon. Tribal and nationalistic differences were discouraged. But after Muhammad's passing, the old tribal differences between the Arabs started to resurface. Following the RomanPersian Wars and the ByzantineSassanid Wars, deep rooted differences between Iraq, formally under the Persian Sassanid Empire, and Syria, formally under the Byzantine Empire, also existed. Each wanted the capital of the newly established Islamic State to be in their area. Previously, the second caliph Umar was very firm on the governors and his spies kept an eye on them. If he felt that a governor or a commander was becoming attracted to wealth, he had him removed from his position.
What is the answer to this question: Who controlled Iraq before the Arabs?
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So...
Persian Sassanid Empire