Here are the dates for a series of events. As you can see, some of the dates are missing.
What are the missing dates. And what happened at these dates?
$~~~????,~ 1914,~ ????,~ 1939,~ 1958,~ ????,~ 1978,~ 1978,~ 2005,~ 2013$
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$\begingroup$ The event is the same for all of the dates. $\endgroup$ – Jorge Fernández Mar 16 '15 at 4:33
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$\begingroup$ Google answers this nicely. $\endgroup$ – Engineer Toast Mar 19 '15 at 13:03
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These years - ???, 1914, ???, 1939, 1958, ???, 1978, 1978, 2005, 2013 - are the years of
"Sede Vacante" (or: the starting years of new popes).
More precisely,
1903 Pius X
1914 Benedict XV
1922 Pius XI
1939 Pius XII
1958 John XXIII
1963 Paul VI
1978 John Paul I
1978 John Paul II
2005 Benedict XVI
2013 Francis
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The answer is
1899, 1915 and 1950
All those years are
the beginning years of all wars in 20th and 21st centuries involved by USA.
Philippine-American War(1899-1902)
World War I(1914-1918)
Armenian Genocide(1915-1918)
Word War II(1939-1945)
The Korean War(1950)
Vietnam War/Lebanon crisis(1958)
Afghan War (1978)
South Lebanon conflict(1978)
Iraq Crisis(2005)
Syrian Civil War(2013)
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1$\begingroup$ which started in 2013? how about 2005 and 1978? $\endgroup$ – Jorge Fernández Mar 16 '15 at 4:57
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$\begingroup$ Ok, good effort +1. But the dates are in chronological order. So no date after 1978 is missing, also a lot of wars would be missing if that was the trend. $\endgroup$ – Jorge Fernández Mar 16 '15 at 5:50
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1$\begingroup$ So some criterion excludes the Gulf War and the war in Afghanistan. $\endgroup$ – Joe Z. Mar 16 '15 at 5:54
