<Tr> <Td> Taiping Rebellion </Td> <Td> 20,000,000 </Td> <Td> 100,000,000 </Td> <Td> China </Td> <Td> 1851 </Td> <Td> 1864 </Td> <Td> 14 </Td> </Tr> <P> There have been numerous wars spanning two or more continents throughout history, including: </P> <Table> Estimated death tolls . Log . mean calculated using simple power law . <Tr> <Th> Event </Th> <Th> Lowest estimate </Th> <Th> Highest estimate </Th> <Th> Location </Th> <Th> From </Th> <Th> To </Th> <Th> Duration (years) </Th> </Tr> <Tr> <Td> Late Bronze Age collapse </Td> <Td> </Td> <Td> </Td> <Td> Egypt, Anatolia, Syria, Canaan, Cyprus, Greece, Mesopotamia </Td> <Td> 1200s BCE </Td> <Td> 1150s BCE </Td> <Td> 40 - 50 </Td> </Tr> <Tr> <Td> Greco - Persian Wars </Td> <Td> </Td> <Td> </Td> <Td> Greece, Thrace, Aegean Islands, Asia Minor, Cyprus, Egypt </Td> <Td> 499 BCE </Td> <Td> 449 BCE </Td> <Td> 50 </Td> </Tr> <Tr> <Td> Peloponnesian War </Td> <Td> </Td> <Td> </Td> <Td> Greece, Asia Minor, Sicily </Td> <Td> 431 BCE </Td> <Td> 404 BCE </Td> <Td> 27 </Td> </Tr> <Tr> <Td> Wars of Alexander the Great </Td> <Td> </Td> <Td> </Td> <Td> Thrace, Illyria, Greece, Asia Minor, Syria, Babylonia, Persia, Sogdiana, India </Td> <Td> 335 BCE </Td> <Td> 323 BCE </Td> <Td> 12 </Td> </Tr> <Tr> <Td> Wars of the Diadochi </Td> <Td> </Td> <Td> </Td> <Td> Macedon, Greece, Thrace, Anatolia, Levant, Egypt, Babylonia, Persia </Td> <Td> 322 BCE </Td> <Td> 275 BCE </Td> <Td> 47 </Td> </Tr> <Tr> <Td> First Punic War </Td> <Td> 285,000 </Td> <Td> 400,000 </Td> <Td> Mediterranean Sea, Sicily, Sardinia, North Africa </Td> <Td> 264 BCE </Td> <Td> 241 BCE </Td> <Td> 23 </Td> </Tr> <Tr> <Td> Second Punic War </Td> <Td> 616,000 </Td> <Td> 770,000 </Td> <Td> Italy, Sicily, Hispania, Cisalpine Gaul, Transalpine Gaul, North Africa, Greece </Td> <Td> 218 BCE </Td> <Td> 201 BCE </Td> <Td> 17 </Td> </Tr> <Tr> <Td> Roman--Seleucid War </Td> <Td> </Td> <Td> </Td> <Td> Greece, Asia Minor </Td> <Td> 192 BCE </Td> <Td> 188 BCE </Td> <Td> </Td> </Tr> <Tr> <Td> Roman--Persian Wars </Td> <Td> </Td> <Td> </Td> <Td> Mesopotamia, Syria, Levant, Egypt, Transcaucasus, Atropatene, Asia Minor, Balkans </Td> <Td> 92 BCE </Td> <Td> 629 CE </Td> <Td> 721 </Td> </Tr> <Tr> <Td> First Mithridatic War </Td> <Td> </Td> <Td> </Td> <Td> Asia Minor, Achaea, Aegean Sea </Td> <Td> 89 BCE </Td> <Td> 85 BCE </Td> <Td> </Td> </Tr> <Tr> <Td> Great Roman Civil War </Td> <Td> </Td> <Td> </Td> <Td> Hispania, Italy, Greece, Illyria, Egypt, Africa </Td> <Td> 49 BCE </Td> <Td> 45 BCE </Td> <Td> </Td> </Tr> <Tr> <Td> Byzantine--Sassanid wars </Td> <Td> </Td> <Td> </Td> <Td> Caucasus, Asia Minor, Egypt, Levant, Mesopotamia </Td> <Td> 502 CE </Td> <Td> 628 CE </Td> <Td> 126 </Td> </Tr> <Tr> <Td> Muslim conquests </Td> <Td> </Td> <Td> </Td> <Td> Mesopotamia, Caucasus, Persia, Levant, North Africa, Anatolia, Iberia, Gaul, Greater Khorasan </Td> <Td> 622 </Td> <Td> 1258 </Td> <Td> 636 </Td> </Tr> <Tr> <Td> Arab--Byzantine wars </Td> <Td> </Td> <Td> </Td> <Td> Levant, Syria, Egypt, North Africa, Anatolia, Crete, Sicily, Italy </Td> <Td> 629 </Td> <Td> 1050 </Td> <Td> 421 </Td> </Tr> <Tr> <Td> Crusades </Td> <Td> 1,000,000 </Td> <Td> 3,000,000 </Td> <Td> Iberian peninsula, Near East, Anatolia, the Levant, Egypt . </Td> <Td> 1095 </Td> <Td> 1291 </Td> <Td> 197 </Td> </Tr> <Tr> <Td> Mongol conquests </Td> <Td> 30,000,000 </Td> <Td> 40,000,000 </Td> <Td> Eurasia </Td> <Td> 1206 </Td> <Td> 1324 </Td> <Td> 118 </Td> </Tr> <Tr> <Td> Byzantine--Ottoman Wars </Td> <Td> </Td> <Td> </Td> <Td> Asia Minor, Balkans </Td> <Td> 1265 </Td> <Td> 1479 </Td> <Td> 214 </Td> </Tr> <Tr> <Td> European colonization of the Americas </Td> <Td> 2,000,000 </Td> <Td> 100,000,000 </Td> <Td> Americas </Td> <Td> 1492 </Td> <Td> 1900 </Td> <Td> 408 </Td> </Tr> <Tr> <Td> Ottoman--Habsburg wars </Td> <Td> </Td> <Td> </Td> <Td> Hungary, Mediterranean, Balkans, North Africa, Malta </Td> <Td> 1526 </Td> <Td> 1791 </Td> <Td> 265 </Td> </Tr> <Tr> <Td> First Anglo - Spanish War </Td> <Td> </Td> <Td> </Td> <Td> Atlantic Ocean, English Channel, Low Countries, Spain, Spanish Main, Portugal, Cornwall, Ireland, Americas, Azores, Canary islands </Td> <Td> 1585 </Td> <Td> 1604 </Td> <Td> 19 </Td> </Tr> <Tr> <Td> Dutch--Portuguese War </Td> <Td> </Td> <Td> </Td> <Td> Atlantic Ocean, Brazil, West Africa, Southern Africa, Indian Ocean, India, East Indies, Indochina, China </Td> <Td> 1602 </Td> <Td> 1663 </Td> <Td> 61 </Td> </Tr> <Tr> <Td> Thirty Years' War </Td> <Td> 3,000,000 </Td> <Td> 11,500,000 </Td> <Td> Europe, mainly present - day Germany </Td> <Td> 1618 </Td> <Td> 1648 </Td> <Td> 30 </Td> </Tr> <Tr> <Td> Second Anglo - Spanish War </Td> <Td> </Td> <Td> </Td> <Td> Caribbean, Spain, Canary Islands, Spanish Netherlands </Td> <Td> 1654 </Td> <Td> 1660 </Td> <Td> 6 </Td> </Tr> <Tr> <Td> Nine Years' War </Td> <Td> </Td> <Td> </Td> <Td> Europe, Ireland, Scotland, North America, South America, Asia </Td> <Td> 1688 </Td> <Td> 1697 </Td> <Td> 9 </Td> </Tr> <Tr> <Td> War of the Spanish Succession </Td> <Td> </Td> <Td> </Td> <Td> Europe, North America, South America </Td> <Td> 1701 </Td> <Td> 1714 </Td> <Td> 13 </Td> </Tr> <Tr> <Td> War of the Quadruple Alliance </Td> <Td> </Td> <Td> </Td> <Td> Sicily, Sardinia, Spain, North America </Td> <Td> 1718 </Td> <Td> 1720 </Td> <Td> </Td> </Tr> <Tr> <Td> Third Anglo - Spanish War </Td> <Td> </Td> <Td> </Td> <Td> Spain, Panama </Td> <Td> 1727 </Td> <Td> 1729 </Td> <Td> </Td> </Tr> <Tr> <Td> War of the Austrian Succession </Td> <Td> </Td> <Td> </Td> <Td> Europe, North America, India </Td> <Td> 1740 </Td> <Td> 1748 </Td> <Td> 8 </Td> </Tr> <Tr> <Td> Seven Years' War </Td> <Td> </Td> <Td> 1,500,000 </Td> <Td> Europe, North America, South America, Africa, Asia </Td> <Td> 1754 </Td> <Td> 1763 </Td> <Td> 9 </Td> </Tr> <Tr> <Td> American Revolutionary War </Td> <Td> </Td> <Td> </Td> <Td> North America, Gibraltar, Balearic Islands, India, Africa, Caribbean Sea, Atlantic Ocean, Indian Ocean </Td> <Td> 1775 </Td> <Td> 1784 </Td> <Td> 8 </Td> </Tr> <Tr> <Td> French Revolutionary Wars </Td> <Td> </Td> <Td> </Td> <Td> Europe, Egypt, Middle East, Atlantic Ocean, Caribbean, Indian Ocean </Td> <Td> 1792 </Td> <Td> 1802 </Td> <Td> 9 </Td> </Tr> <Tr> <Td> Napoleonic Wars </Td> <Td> 3,500,000 </Td> <Td> 7,000,000 </Td> <Td> Europe, Atlantic Ocean, Mediterranean Sea, North Sea, Río de la Plata, French Guiana, West Indies, Indian Ocean, North America, South Caucasus </Td> <Td> 1803 </Td> <Td> 1815 </Td> <Td> 13 </Td> </Tr> <Tr> <Td> Crimean War </Td> <Td> 255,000 </Td> <Td> 1,000,000 </Td> <Td> Sicily, Sardinia, Spain, North America, Southeastern Europe, Black Sea </Td> <Td> 1853 </Td> <Td> 1856 </Td> <Td> </Td> </Tr> <Tr> <Td> World War I </Td> <Td> 15,000,000 </Td> <Td> 65,000,000 </Td> <Td> Global </Td> <Td> 1914 </Td> <Td> 1918 </Td> <Td> </Td> </Tr> <Tr> <Td> World War II </Td> <Td> 40,000,000 </Td> <Td> 85,000,000 </Td> <Td> Global </Td> <Td> 1939 </Td> <Td> 1945 </Td> <Td> 6 </Td> </Tr> <Tr> <Td> Cold War </Td> <Td> </Td> <Td> </Td> <Td> Global </Td> <Td> 1947 </Td> <Td> 1991 </Td> <Td> 44 </Td> </Tr> <Tr> <Td> War on Terror </Td> <Td> 272,000 </Td> <Td> 1,260,000 </Td> <Td> Global </Td> <Td> </Td> <Td> present </Td> <Td> 16 </Td> </Tr> </Table> <Tr> <Th> Event </Th> <Th> Lowest estimate </Th> <Th> Highest estimate </Th> <Th> Location </Th> <Th> From </Th> <Th> To </Th> <Th> Duration (years) </Th> </Tr>

What three things determined the course of events during world war 1