Problem: Iran:

In 1729, Nader Shah, a chieftain and military genius from Khorasan, successfully drove out and conquered the Pashtun invaders. He subsequently took back the annexed Caucasian territories which were divided among the Ottoman and Russian authorities by the ongoing chaos in Iran. During the reign of Nader Shah, Iran reached its greatest extent since the Sassanid Empire, reestablishing the Iranian hegemony all over the Caucasus, as well as other major parts of the west and central Asia, and briefly possessing what was arguably the most powerful empire at the time.

Nader Shah expanded Iranian power to its highest peak since what Empire?
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A: the Sassanid Empire

Problem: Avicenna:

The study of the Quran and the Hadith thrived in such a scholarly atmosphere. Philosophy, Fiqh and theology (kalaam) were further developed, most noticeably by Avicenna and his opponents. Al-Razi and Al-Farabi had provided methodology and knowledge in medicine and philosophy. Avicenna had access to the great libraries of Balkh, Khwarezm, Gorgan, Rey, Isfahan and Hamadan. Various texts (such as the 'Ahd with Bahmanyar) show that he debated philosophical points with the greatest scholars of the time. Aruzi Samarqandi describes how before Avicenna left Khwarezm he had met Al-Biruni (a famous scientist and astronomer), Abu Nasr Iraqi (a renowned mathematician), Abu Sahl Masihi (a respected philosopher) and Abu al-Khayr Khammar (a great physician).

Who was the famous astronomer that Avicenna met before he left Khwarezm?
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A: Al-Biruni

Problem: Endangered Species Act:

This first list is referred to as the "Class of '67" in The Endangered Species Act at Thirty, Volume 1, which concludes that habitat destruction, the biggest threat to those 78 species, is still the same threat to the currently listed species. It included only vertebrates because the Department of Interior's definition of "fish and wildlife" was limited to vertebrates. However, with time, researchers noticed that the animals on the endangered species list still were not getting enough protection, thus further threatening their extinction. The endangered species program was expanded by the Endangered Species Act of 1969.

What was concluded to be the biggest threat to the listed species?
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A: habitat destruction

Problem: Canadian Armed Forces:

Approximately 26,000 citizen soldiers, sailors, and airmen and women, trained to the level of and interchangeable with their Regular Force counterparts, and posted to CAF operations or duties on a casual or ongoing basis, make up the Primary Reserve. This group is represented, though not commanded, at NDHQ by the Chief of Reserves and Cadets, who is usually a major general or rear admiral, and is divided into four components that are each operationally and administratively responsible to its corresponding environmental command in the Regular Force the Naval Reserve (NAVRES), Land Force Reserve (LFR), and Air Reserve (AIRRES) in addition to one force that does not fall under an environmental command, the Health Services Reserve under the Canadian Forces Health Services Group.

Who won't command the reserves?
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A:
unanswerable