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On St. George's Night (Estonian: Jurioo ulestous) 23 April 1343, the indigenous Estonian population in the Duchy of Estonia, the Bishopric of Osel-Wiek and the insular territories of the State of the Teutonic Order tried to rid themselves of the Danish and German rulers and landlords, who had conquered the country in the 13th century during the Livonian crusade, and to eradicate the non-indigenous Christian religion. After initial success the revolt was ended by the invasion of the Teutonic Order. In 1346 the Duchy of Estonia was sold for 19,000 Koln marks to the Teutonic Order by the King of Denmark. The shift of sovereignty from Denmark to the State of the Teutonic Order took place on 1 November 1346.
What event ended the uprising?
A: the invasion of the Teutonic Order.

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Bird migration routes have been studied by a variety of techniques including the oldest, marking. Swans have been marked with a nick on the beak since about 1560 in England. Scientific ringing was pioneered by Hans Christian Cornelius Mortensen in 1899. Other techniques include radar and satellite tracking.
Since when have swans been marked?
A: 1560

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Windows 8 supports a feature of the UEFI specification known as "Secure boot", which uses a public-key infrastructure to verify the integrity of the operating system and prevent unauthorized programs such as bootkits from infecting the device's boot process. Some pre-built devices may be described as "certified" by Microsoft; these must have secure boot enabled by default, and provide ways for users to disable or re-configure the feature. ARM-based Windows RT devices must have secure boot permanently enabled.
How does secure boot help avert boot process infections?
A: uses a public-key infrastructure to verify the integrity of the operating system

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The first years of the 14th century were marked by famines, culminating in the Great Famine of 131517. The causes of the Great Famine included the slow transition from the Medieval Warm Period to the Little Ice Age, which left the population vulnerable when bad weather caused crop failures. The years 131314 and 131721 were excessively rainy throughout Europe, resulting in widespread crop failures. The climate changewhich resulted in a declining average annual temperature for Europe during the 14th centurywas accompanied by an economic downturn.
Along with 131721, what span saw extreme rains in Europe?
A:
131314