Here is a question about this article: As evident in his imperial edicts, the Hongwu Emperor was well aware of the Buddhist link between Tibet and China and wanted to foster it. Rolpe Dorje, 4th Karmapa Lama (1340–1383) rejected the Hongwu Emperor's invitation, although he did send some disciples as envoys to the court in Nanjing. The Hongwu Emperor also entrusted his guru Zongluo, one of many Buddhist monks at court, to head a religious mission into Tibet in 1378–1382 in order to obtain Buddhist texts.
What is the answer to this question: What did the the Hongwu Emperor want to continue to promote?
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So... the Buddhist link between Tibet and China


Here is a question about this article: The junction forward voltage is the voltage applied to the emitter–base junction of a BJT in order to make the base conduct a specified current. The current increases exponentially as the junction forward voltage is increased. The values given in the table are typical for a current of 1 mA (the same values apply to semiconductor diodes). The lower the junction forward voltage the better, as this means that less power is required to "drive" the transistor. The junction forward voltage for a given current decreases with increase in temperature. For a typical silicon junction the change is −2.1 mV/°C. In some circuits special compensating elements (sensistors) must be used to compensate for such changes.
What is the answer to this question: What is the junction forward voltage?
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So... the voltage applied to the emitter–base junction of a BJT


Here is a question about this article: Greater London's population declined steadily in the decades after the Second World War, from an estimated peak of 8.6 million in 1939 to around 6.8 million in the 1980s. The principal ports for London moved downstream to Felixstowe and Tilbury, with the London Docklands area becoming a focus for regeneration, including the Canary Wharf development. This was borne out of London's ever-increasing role as a major international financial centre during the 1980s. The Thames Barrier was completed in the 1980s to protect London against tidal surges from the North Sea.
What is the answer to this question: What event preceded a substantial decrease in the average population in London? 
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So...
the Second World War