Problem: Cotton:

Though known since antiquity the commercial growing of cotton in Egypt only started in 1820's, following a Frenchman, by the name of M. Jumel, propositioning the then ruler, Mohamed Ali Pasha, that he could earn a substantial income by growing an extra-long staple Maho (Barbadence) cotton, in Lower Egypt, for the French market. Mohamed Ali Pasha accepted the proposition and granted himself the monopoly on the sale and export of cotton in Egypt; and later dictated cotton should be grown in preference to other crops. By the time of the American Civil war annual exports had reached $16 million (120,000 bales), which rose to $56 million by 1864, primarily due to the loss of the Confederate supply on the world market. Exports continued to grow even after the reintroduction of US cotton, produced now by a paid workforce, and Egyptian exports reached 1.2 million bales a year by 1903.

When did cotton begin to be commercially grown in the US?
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A: unanswerable


Problem: High-definition television:

In 1981, the MUSE system was demonstrated for the first time in the United States, using the same 5:3 aspect ratio as the Japanese system. Upon visiting a demonstration of MUSE in Washington, US President Ronald Reagan was impressed and officially declared it "a matter of national interest" to introduce HDTV to the US.

When was the MUSE system demonstrated in the US first?
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A: 1981


Problem: Presbyterianism:

The Reformed Presbyterian Church in Malawi has 150 congregations and 17 000–20 000 members. It was a mission of the Free Presbyterian church of Scotland. The Restored Reformed Church works with RPCM. Evangelical Presbyterian Church in Malawi is an existing small church. Part of the Presbyterian Church in Malawi and Zambia is known as CCAP, Church of Central Africa-Presbyterian. Often the churches there have one main congregation and a number of Prayer Houses develop. education, health ministries as well as worship and spiritual development are important.

The Church of Central Africa-Presbyterian often offers what services?
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A: education, health ministries as well as worship


Problem: The Blitz:

The Luftwaffe's poor intelligence meant that their aircraft were not always able to locate their targets, and thus attacks on factories and airfields failed to achieve the desired results. British fighter aircraft production continued at a rate surpassing Germany's by 2 to 1. The British produced 10,000 aircraft in 1940, in comparison to Germany's 8,000. The replacement of pilots and aircrew was more difficult. Both the RAF and Luftwaffe struggled to replace manpower losses, though the Germans had larger reserves of trained aircrew. The circumstances affected the Germans more than the British. Operating over home territory, British flyers could fly again if they survived being shot down. German crews, even if they survived, faced capture. Moreover, bombers had four to five crewmen on board, representing a greater loss of manpower. On 7 September, the Germans shifted away from the destruction of the RAF's supporting structures. German intelligence suggested Fighter Command was weakening, and an attack on London would force it into a final battle of annihilation while compelling the British Government to surrender.

Why did the Luftwaffe fail to locate their targets?
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A:
poor intelligence