All cultures start with these (unless you say they're missing some! Subtract whatever you want!)

--Language skills
--Making tools of wood and stone
--Making weapons of stone and wood
--Making buildings constructed with stone and wood
--Armormaking (with wood)
--Ropemaking
--Textiles
--Dying textiles
--Tanning//Leatherworking
--Hunting
--Fishing
--Spear-fishing
--Making Fire
--Cooking with Fire
--Domesticating animals
--Riding large animals
--Training animals
--The Wheel
--Roads
--Pottery
--Agriculture
--Herbalism
--Trapping
--Painting
--Meditation
--Storytelling (poetry?)
--Written language
--Math
--Engineering
--Magic? (This can be apply more than once, for different types/kinds of magic...)
--Raft/canoe/boatmaking
--Sailing
--Mathematics
--Currency
--Astronomy
--Navigation
--Archery
--Windmills

Bronze Age
--Mining // Metalworking
--Metallurgy
--Weaponmaking (with metal)
--Armormaking (with metal)
--Bricks
--Glassblowing
--Lensmaking
--Compass?
--Cartography?
--Architecture?
--Stoneworking/stonecarving
--Printing Press
--Chemistry
--Martial arts?


Powder Age
--Gunpowder
--Pistols
--Rifles
--Cannons
--Petards
--Bombs


Steampunk Age (optional)
--Powering things with steam
--Big punched-card computers
--Airships
--Rayguns
--Batteries
--Electricity
--Railroads
--Automata