S := [ [[`Horse`, 0], [`Warrior Code`, 0], [`Pottery`, 0], [`Bronze Work`, 0], [`Masonry`, 0], [`Alphabet`, 0], [`CeremBurial`, 0]], [[`Currency`, 1], [`MapMaking`, 1], [`Wheel`, 1], [`Writing`, 1], [`Mysticism`, 1], [`Code Law`, 1], [`Ironwork`, 2], [`Math`, 2], [`Polytheism`, 2]], [[`Seafaring`, 3], [`Construction`, 3], [`Literacy`, 3], [`Monarchy`, 3], [`Trade`, 4], [`Astronomy`, 5]], [[`Republic`, 4], [`Feudalism`, 5], [`BridgeBldg`, 6], [`Engineering`, 6], [`Philos`, 6], [`Navigation`, 9]], [[`Chivalry`, 7 ], [`Banking`, 8], [`University`, 9], [`Monotheism`, 9], [`Medicine`, 10], [`Invention`, 11], [`Physics`, 13]], [[`Gravity`, 11], [`Theology`, 13], [`Gunpowder`, 14], [`Chemistry`, 14], [`Economics`, 15], [`Democracy`, 15], [`Sanitation`, 16], [`Magnetism `, 17], [`Steam Engine`, 21]], [[`Atomic Thy`, 17], [`Leadersh`, 19], [`Metallurgy `, 20], [`Explosives`, 23], [`Railroads`, 25]], [[`Conscrip`, 25], [`Electricity`, 28], [`Industrial`, 29]], [[`Fundamentalism`, 28], [`Tactics`, 30], [`Communism`, 31], [`Refrigeration`, 32], [`Corporat`, 33], [`Steel`, 36]], [[`Espionage`, 33], [`Genetic Engg`, 35], [`Amphibious Warfare`, 36], [`Refining`, 36], [`Electron`, 38 ], [`Guerilla`, 42], [`Machine To`, 44]], [[`Combustion`, 39], [`Miniaturization`, 48]], [[`Flight`, 41], [`Automobile`, 44]], [[`MassProd`, 45], [`Radio`, 45], [`Mobile Warf`, 52]], [[`Recycling`, 47], [`Nuc Fission`, 48], [`Adv Flight`, 55], [`Labor Unions`, 55], [`Comput`, 56]], [[`Nuc Power`, 50], [`Rocketry`, 57], [`Robotics`, 58], [`Combined Arms`, 58]], [[`Laser`, 51], [`Space Fl`, 62]], [[`Plastics`, 63], [`Enviromentalism`, 64]], [[`Supercond`, 68]], [[`Fusion Power`, 69 ], [`Stealth`, 71]], [[`Future Tech`, 71]] ]; 0 , Horse 0 , Warrior Code 0 , Pottery 0 , Bronze Work 0 , Masonry 0 , Alphabet 0 , CeremBurial 1 , Currency 1 , MapMaking 1 , Wheel 1 , Writing 1 , Mysticism 1 , Code Law 2 , Ironwork 2 , Math 2 , Polytheism 3 , Seafaring 3 , Construction 3 , Literacy 3 , Monarchy 4 , Trade 5 , Astronomy 4 , Republic 5 , Feudalism 6 , BridgeBldg 6 , Engineering 6 , Philos 9 , Navigation 7 , Chivalry 8 , Banking 9 , University 9 , Monotheism 10 , Medicine 11 , Invention 13 , Physics 11 , Gravity 13 , Theology 14 , Gunpowder 14 , Chemistry 15 , Economics 15 , Democracy 16 , Sanitation 17 , Magnetism 21 , Steam Engine 17 , Atomic Thy 19 , Leadersh 20 , Metallurgy 23 , Explosives 25 , Railroads 25 , Conscrip 28 , Electricity 29 , Industrial 28 , Fundamentalism 30 , Tactics 31 , Communism 32 , Refrigeration 33 , Corporat 36 , Steel 33 , Espionage 35 , Genetic Engg 36 , Amphibious Warfare 36 , Refining 38 , Electron 42 , Guerilla 44 , Machine To 39 , Combustion 48 , Miniaturization 41 , Flight 44 , Automobile 45 , MassProd 45 , Radio 52 , Mobile Warf 47 , Recycling 48 , Nuc Fission 55 , Adv Flight 55 , Labor Unions 56 , Comput 50 , Nuc Power 57 , Rocketry 58 , Robotics 58 , Combined Arms 51 , Laser 62 , Space Fl 63 , Plastics 64 , Enviromentalism 68 , Supercond 69 , Fusion Power 71 , Stealth 71 , Future Tech code, level, predec, name 53 14 55 Adv Flight 16 1 0 Alphabet 84 10 36 Amphibious Warfare 21 3 5 Astronomy 27 7 17 Atomic Thy 51 12 44 Automobile 65 5 8 Banking 42 4 6 BridgeBldg 37 1 0 Bronze Work 01 1 0 CeremBurial 23 6 14 Chemistry 77 5 7 Chivalry 02 2 1 Code Law 86 15 58 Combined Arms 45 11 39 Combustion 11 9 31 Communism 58 14 56 Comput 80 8 25 Conscrip 40 3 3 Construction 70 9 33 Corporat 62 2 1 Currency 12 6 15 Democracy 67 6 15 Economics 46 8 28 Electricity 57 10 38 Electron 41 4 6 Engineering 15 17 64 Enviromentalism 82 10 33 Espionage 43 7 23 Explosives 75 4 5 Feudalism 49 12 41 Flight 10 9 28 Fundamentalism 34 19 69 Fusion Power 35 20 71 Future Tech 33 10 35 Genetic Engg 25 6 11 Gravity 83 10 42 Guerilla 76 6 14 Gunpowder 74 1 0 Horse 69 8 29 Industrial 50 5 11 Invention 39 2 2 Ironwork 13 14 55 Labor Unions 30 16 51 Laser 78 7 19 Leadersh 18 3 3 Literacy 48 10 44 Machine To 24 6 17 Magnetism 60 2 1 MapMaking 36 1 0 Masonry 54 13 45 MassProd 19 2 2 Math 66 5 10 Medicine 79 7 20 Metallurgy 56 11 48 Miniaturization 85 13 52 Mobile Warf 5 3 3 Monarchy 8 5 9 Monotheism 3 2 1 Mysticism 64 4 9 Navigation 28 14 48 Nuc Fission 29 15 50 Nuc Power 7 4 6 Philos 22 5 13 Physics 55 17 63 Plastics 4 2 2 Polytheism 59 1 0 Pottery 52 13 45 Radio 68 7 25 Railroads 14 14 47 Recycling 44 10 36 Refining 72 9 32 Refrigeration 6 4 4 Republic 88 15 58 Robotics 87 15 57 Rocketry 71 6 16 Sanitation 61 3 3 Seafaring 31 16 62 Space Fl 89 19 71 Stealth 26 6 21 Steam Engine 47 9 36 Steel 32 18 68 Supercond 81 9 30 Tactics 9 6 13 Theology 63 3 4 Trade 20 5 9 University 73 1 0 Warrior Code 38 2 1 Wheel 17 2 1 Writing