MYSTICISM	ANCIENT
MEDITATION	ANCIENT
POLYTHEISM	ANCIENT
PRIESTHOOD	ANCIENT
MONOTHEISM	ANCIENT
FISHING	ANCIENT
THE WHEEL	ANCIENT
AGRICULTURE	ANCIENT
POTTERY	ANCIENT
SAILING	ANCIENT
WRITING	ANCIENT
HUNTING	ANCIENT
MINING	ANCIENT
ARCHERY	ANCIENT
MASONRY	ANCIENT
ANIMAL HUSBANDRY	ANCIENT
BRONZE WORKING	ANCIENT

MONARCHY	CLASSICAL
LITERATURE	CLASSICAL
CODE OF LAWS	CLASSICAL
DRAMA	CLASSICAL
AESTHETICS	CLASSICAL
MATHEMATICS	CLASSICAL
ALPHABET	CLASSICAL
CALENDAR	CLASSICAL
CURRENCY	CLASSICAL
HORSEBACK RIDING	CLASSICAL
METAL CASTING	CLASSICAL
COMPASS	CLASSICAL
CONSTRUCTION	CLASSICAL
IRON WORKING	CLASSICAL

FEUDALISM	MEDIEVAL
THEOLOGY	MEDIEVAL
MUSIC	MEDIEVAL
CIVIL SERVICE	MEDIEVAL
GUILDS	MEDIEVAL
DIVINE RIGHT	MEDIEVAL
PHILOSOPHY	MEDIEVAL
PAPER	MEDIEVAL
BANKING	MEDIEVAL
MACHINERY	MEDIEVAL
ENGINEERING	MEDIEVAL
OPTICS	MEDIEVAL

NATIONALISM	RENAISSANCE
MILITARY TRADITION	RENAISSANCE
CONSTITUTION	RENAISSANCE
LIBERALISM	RENAISSANCE
DEMOCRACY	RENAISSANCE
CORPORATION	RENAISSANCE
EDUCATION	RENAISSANCE
PRINTING PRESS	RENAISSANCE
ECONOMICS	RENAISSANCE
ASTRONOMY	RENAISSANCE
CHEMISTRY	RENAISSANCE
GUNPOWDER	RENAISSANCE
REPLACEABLE PARTS	RENAISSANCE
MILITARY SCIENCE	RENAISSANCE
RIFLING	RENAISSANCE

FASCISM	INDUSTRIAL
SCIENTIFIC METHOD	INDUSTRIAL
PHYSICS	INDUSTRIAL
BIOLOGY	INDUSTRIAL
MEDICINE	INDUSTRIAL
ELECTRICITY	INDUSTRIAL
COMBUSTION	INDUSTRIAL
FISSION	INDUSTRIAL
STEAM POWER	INDUSTRIAL
STEEL	INDUSTRIAL
ASSEMBLY LINE	INDUSTRIAL
RAILROAD	INDUSTRIAL
ARTILLERY	INDUSTRIAL
INDUSTRIALISM	INDUSTRIAL

MASS MEDIA	MODERN
ECOLOGY	MODERN
FLIGHT	MODERN
ADVANCED FLIGHT	MODERN
PLASTICS	MODERN
COMPOSITES	MODERN
FIBER OPTICS	MODERN
RADIO	MODERN
REFRIGERATION	MODERN
SUPERCONDUCTORS	MODERN
COMPUTERS	MODERN
LASER	MODERN
ROCKETRY	MODERN
SATELLITES	MODERN
ROBOTICS	MODERN

STEALTH	FUTURE
GENETICS	FUTURE
FUSION	FUTURE
FUTURE TECH	FUTURE