For 10 points, name this European country that colonized Laos and Vietnam.
A 1908 plot to poison a garrison of colonial troops from this country was unraveled when one of the conspirators went to confession. Along with the Spanish, this country's military lost the 1858 Siege of Tourane after its alliance with Gia Long unraveled, and this country's army brutally suppressed a 1930 mutiny in Yen Bai led by the VNQDD, as it had a 1916 uprising in Cochinchina. Missionaries from this country were successful in converting many residents in such cities as (*) Da Nang and Hue to Catholicism, but this country had to recognize the independence of several of its colonies at the 1954 Geneva Conference after it was defeated in the Battle of Dien Bien Phu. For 10 points, name this European country that colonized Laos and Vietnam.
A 1908 plot to poison a garrison of colonial troops from this country was unraveled when one of the conspirators went to confession.
{France} [or the {French Republic} or {République française}; accept Vietnam before “{Tourane}” is read just because they were colonial troops in Vietnam]