Problem: As this process continued, the missile found itself being used for more and more of the roles formerly filled by guns. First to go were the large weapons, replaced by equally large missile systems of much higher performance. Smaller missiles soon followed, eventually becoming small enough to be mounted on armored cars and tank chassis. These started replacing, or at least supplanting, similar gun-based SPAAG systems in the 1960s, and by the 1990s had replaced almost all such systems in modern armies. Man-portable missiles, MANPADs as they are known today, were introduced in the 1960s and have supplanted or even replaced even the smallest guns in most advanced armies.
The missile started being used more often instead of what weapon?
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Answer: guns

Problem: The metaphysics in Mimamsa school consists of both atheistic and theistic doctrines and the school showed little interest in systematic examination of the existence of God. Rather, it held that the soul is eternal omnipresent, inherently active spiritual essence, then focussed on the epistemology and metaphysics of dharma. To them, dharma meant rituals and duties, not devas (gods), because devas existed only in name. The Mimamsakas held that the Vedas are "eternal authorless infallible", that Vedic vidhi (injunctions) and mantras in rituals are prescriptive karya (actions), and the rituals are of primary importance and merit. They considered the Upanishads and other self-knowledge, spirituality-related texts to be of secondary importance, a philosophical view that the Vedanta school disagreed with.
How did the Mimamsa school consider dharma?
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Answer: rituals and duties

Problem: On 27 September, MacArthur received the top secret National Security Council Memorandum 81/1 from Truman reminding him that operations north of the 38th parallel were authorized only if "at the time of such operation there was no entry into North Korea by major Soviet or Chinese Communist forces, no announcements of intended entry, nor a threat to counter our operations militarily..." On 29 September MacArthur restored the government of the Republic of Korea under Syngman Rhee. On 30 September, Defense Secretary George Marshall sent an eyes-only message to MacArthur: "We want you to feel unhampered tactically and strategically to proceed north of the 38th parallel." During October, the ROK police executed people who were suspected to be sympathetic to North Korea, and similar massacres were carried out until early 1951.
What memorandum stated the circumstances for engaging in conflict above the 38th parallel?
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Answer:
National Security Council Memorandum 81/1