why Austria-Hungary made demands Serbia would reject in 1914

Austria-Hungary made demands it expected Serbia to reject

Austria-Hungary had no solid proof that Serbia was behind Franz Ferdinand’s assassination. But it wanted to confront Serbia, so it made demands Serbia was expected to reject. That rejection would give Austria-Hungary a reason to start a war.

A lunar crater can be colder than Pluto

26 K (−247 °C)

A spacecraft measured 26 K (−247 °C) near the winter solstice in Hermite, a permanently shadowed crater near the Moon’s north pole. It was the lowest temperature the spacecraft had measured anywhere in the Solar System.

Rising oxygen may have helped trigger ancient ice ages

When oxygen began rising in Earth's atmosphere, it likely destroyed some methane, a powerful heat-trapping gas. This weakened the greenhouse effect and may have helped trigger the Huronian ice ages.

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why Austria-Hungary made demands Serbia would reject in 1914

Austria-Hungary made demands it expected Serbia to reject

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