When populations were quickly decreased by causes such as the Black Death or devastating warfare ( for example, Genghis Khan's Mongol hordes in eastern and central Europe, Thirty Years ' War in Germany ), this could lead to settlements being abandoned.

When Genghis Khan returned from his campaign the new emperor Xianzong pled with him, but the general Aša-gambu challenged Genghis Khan.

When Genghis Khan died in 1227, he left 4, 000 Mongol men to Jochi's family.

When Genghis Khan's youngest brother Temuge threatened Toregene to seize the throne, Guyuk came to Karakorum to try and secure his position.

When Möngke Khan became Great Khan in 1251, he immediately set out to implement his grandfather Genghis Khan's plan for world empire.

When Subutai heard in 1242 that Grand Khan Ögedei had died the previous year, the Mongol army retreated eastward, because Subutai had three princes of the blood in his command and Genghis Khan had made clear that all descendants of the Khagan ( Grand Khan ) should return to the Mongol capital of Karakorum for the kurultai which would elect the next Khagan.

When Muhammad II of Khwarezm executed the merchants dispatched by the Mongols, Genghis Khan declared war on Khwārazm-Shāh dynasty in 1219.

When the army who awaited the enemy was busy fighting the Mongolian vanguard, Genghis Khan led the main force towards the sultan who was trapped between the Mongols and the river.

When he was 17 years old, Genghis Khan experienced the disastrous defeat of Khalakhaljid Sands against the army of Jamukha.

When Genghis Khan ’ s youngest brother, Temuge, threatened the Great Khatun Toregene in an attempt to seize the throne, Guyuk came to Mongolia from Emil to secure his position immediately.

When the papal envoy John of Plano Carpini protested Mongol attacks on the Catholic kingdoms of Europe, Guyuk stated that these people had slain Mongol envoys in the time of Genghis Khan and Ogedei Khan.

When Genghis Khan was deciding who should succeed him he had trouble choosing between his four sons.

When Genghis Khan returned home he sent for Jochi.

When the latter refused to obey and asked a pardon Genghis Khan sent Chagatai and Ögedei against him.

When Temuge Otchigen, the youngest brother of Genghis, gathered his men and tried to unsuccessfully seize the throne, Guyuk quickly came to meet him.

When rumors reached Jebe, he immediately returned to where Genghis Khan was and offered 100 white horses ( the same kind of horse that Genghis Khan was riding when Jebe shot the horse ) as a sign of loyalty.

When Count Olaf appears as Coach Genghis, the Quagmires decide to involve themselves ; they research Olaf's past crimes in old newspapers in the school library and sneak out of Vice Principal Nero's concerts to spy on him and the Baudelaires.

When Jebe ( one of the Mongol generals pursuing Muhammad ) heard of Ala ad-Din Muhammad's death, he asked Genghis Khan for a year or two to continue his conquests before returning to Mongolia via the Caucasus.

When Genghis died in 1227, the leadership of the Empire passed to Genghis ' son ( Ariq Boke's uncle ), Ogedei.

When last Tayan Khan was killed after a battle with Genghis Khan in 1203, his son Kuchlug with his remaining Naiman troops fled to the Kara-Khitan.

When integrating new soldiers into the army, Genghis divided the soldiers under different leaders to break up the social and tribal connections, so there was no division based on heritage of tribal alliances.

When they are able to hold a live spider without feeling anxious, they will have conquered their phobia.

When the Romans finally conquered Pannonia in 8 AD, the Boii seem not to have opposed them.

When Arioch and his fellow Chaos Lords conquered the Fifteen Planes, the balance between the forces of Law and Chaos tipped in favor of Chaos, and their minions-such as Glandyth-a-Krae-embarked on a bloody rampage.

When the British army conquered Eritrea from the Italians in spring 1941, most of the infrastructures and the industrial areas were extremely damaged.

" When Magyars came to Pannonia in the 8th century, the Szeklers joined them, and together they conquered Pannonia ( today Hungary ).

When the Arabs conquered the region much later, their name for the river became Guadalete ( River Lethe, in Arabic ).

When Portugal conquered Malacca in 1511 and committed atrocities against the Malay Sultanate, the Chinese responded with violent force against Portugal.

When King Gustav Vasa finally besieged and conquered the city three years later, an event which ended the Kalmar Union and the Swedish Middle Ages, he noted every second building in the city was abandoned.

When the Normans conquered England, they brought the term with them.

When established in 1936, Italian East Africa covered the former Italian Eritrea and Italian Somaliland and the recently conquered Ethiopia.

When the dynasty was established, the conquered land was divided into hereditary fiefs that eventually became powerful in their own right.

When Sardinia was finally conquered by the Catalan-Aragonese army, Cagliari ( Castel de Càller or simply Càller in Catalan ) became the administrative capital of the newborn Kingdom of Sardinia, one of the many kingdoms forming the Crown of Aragon, which later came under the rule of the Spanish Empire.

When Cyrus the Great conquered Babylon in 539 BCE, Cambyses was employed in leading religious ceremonies.

When Charlemagne conquered most of the Lombard kingdoms, some Umbrian territories were given to the Pope, who established temporal power over them.

When William of Normandy conquered England, he divided the nation into many " manors ", the owners of which came to be known as barons ; those who held many manors were known as " greater barons ", while those with fewer manors were the " lesser barons ".

When the Ottoman Turks conquered Constantinople in 1453, the Patriarchate ceased to function.

When King David conquered Edom, which up to then had been a common border of Edom and Midian, he took over Eilat, the border city shared by them as well.

When he conquered Lotf Ali Khan, the last king of the Zand Dynasty, Qajar had Khan castrated in revenge.

When Richelieu invaded Piedmont and conquered Susa, the duke changed sides again and returned to an alliance with France.

When the Emperor Hadrian threatened to rebuild Jerusalem as a pagan city dedicated to Jupiter, in 132, Aelia Capitolina, some of the leading sages of the Sanhedrin supported a rebellion led by Simon Bar Kosiba ( later known as Bar Kokhba ), who established a short-lived independent state that was conquered by the Romans in 135.

When Charles VIII of France invaded Savoy, Piedmont, and Italy in 1494 and conquered Naples, the House of Savoy retreated and established its residence in Turin, where it remained until the unification of Italy.

When Frederick Barbarossa went on the Crusade of 1189, Henry returned to Saxony, mobilized an army of his faithful, and conquered and ravaged the rich city of Bardowick as punishment for her disloyalty.

When Octavian conquered Egypt, he spared Alexander, but took him, his sister and his brother Ptolemy Philadelphus from Egypt to Rome.

When France colonised America, the territory it conquered was immense, including the whole Mississippi River ( whose first European name was the River Colbert ), from its mouth to its source at the borders of Canada.

When the Ostrogoths conquered Rimini in 493, Odoacer, besieged in Ravenna, had to capitulate.