Problem: The Mongol Empire conquered the Qara Khitai in the years 1216-1218 AD. Prior to the invasion, war with the Khwarazmian dynasty and the usurpation of power by the Naiman prince Kuchlug had weakened the Qara Khitai. When Kuchlug besieged Almaliq, a city belonging to the Karluks, vassals of the Mongol Empire, Genghis Khan dispatched a force under command of Jebe to pursue Kuchlug. After his force of 30,000 was defeated by Jebe at the Khitan capital Balasagun, Kuchlug faced rebellions over his unpopular rule, forcing him to flee to modern Afghanistan, where he was captured by hunters in 1218. The hunters turned Kuchlug over to the Mongols, who beheaded him. Upon defeating the Qara Khitai, the Mongols now had a direct border with the Khwarazmian Empire, which they would soon invade in 1219.

How many years did it take for the Mongol Empire to conquer the Qara Khitai?
Answer: 2

Problem: The control of Tenasserim coast  in the early 18th century was divided between Burma and Siam, with the Burmese controlling down to Tavoy  and the Siamese controlling the rest. Throughout history, both kingdoms had claimed the entire coast--, and control had changed hands several times. The Burmese Pagan Dynasty controlled the entire coast until 1287. Throughout 14th and 16th centuries, Siamese kingdoms  controlled much of the coast, up to just south of present-day Mawlamyaing. In the mid-16th century, the Burmese under Toungoo kings Tabinshwehti and Bayinnaung tried to regain the coast, first failing in 1548, and finally succeeding in 1564 when they conquered all of Siam for the first time. The Siamese revolted in 1584, and under their king Naresuan regained the lower coast by 1593 and the entire coast by 1594. The Burmese retook the upper coast down to Tavoy in 1615 but failed to recover the rest. This arrangement lasted until 1740 . During this period, Mergui  on the Andaman Sea was the primary port of Siam through which its trade with India and the West was conducted.

How many years passed between the failure in 1548 and the success in 1564 of the Burmese in attempting to controlling the Tenasserim coast?
Answer: 16

Problem: In 1545, Polin was on his way to fight against the English in the area of Boulogne. While in Marseilles in 1545, Polin was involved as a leader in the massacre of the Protestant Waldensians . Outside the Piedmont the Waldenses joined the local Protestant churches in Bohemia, France and Germany. After they came out of clandestinity and reports were made of sedition on their part, the French king, Francis I issued on 1 January 1545 the "Arrêt de Mérindol", and armed a crusade against the Waldensians of Provence. The leaders in the 1545 massacres were Jean Maynier d'Oppède, First President of the parlement of Provence, and Antoine Escalin des Aimars who was returning from the Italian Wars with 2,000 veterans, the Bandes de Piémont. Deaths ranged from hundreds to thousands, depending on the estimates, and several villages were devastated.

How many leaders in the 1545 massacres?
Answer: 2

Problem: After the campaign, the Dutch controlled virtually all of the Banda Islands. The English evacuated the island of Run, and had only intermittent presence on Nailaka. In the 1667 Peace of Breda the English formally gave up all claims to the islands. The islands were severely depopulated as a result of the campaign. Only about 1,000 out of the 15,000 inhabitants remained. To keep the island productive, the VOC repopulated the islands, mostly with slaves taken from the rest of modern-day Indonesia, India, the coast of China, working under command of Dutch planters . The original natives were also enslaved and were ordered to teach the newcomers about nutmeg and mace agriculture. The treatment of the slaves were severe — the native Bandanese population dropped to one hundred by 1681, and 200 slaves were imported annually to keep the slave population steady at 4,000.

How many years spanned these events?
Answer:
14