Aqueduct: the whole path

1
Tools & MakingI
Stone Tools
The first cutting edge
3.3 Mya
2
Fire & ShelterI
Control of Fire
Light, heat and cooked food
1 Mya
3
Fire & ShelterI
Rope & Cordage
Twisted fibres that hold the world
50,000 years ago
4
Materials & ChemistryII
Pottery
Clay turned to stone by fire
18,000 years ago
needs 2
5
Building & CitiesII
Lime and lime mortar
Burnt stone that turns back to stone
10,000 years ago
needs 1, 2
6
Building & CitiesII
Bricks
Standard blocks of earth
c. 7,500 BCE
7
Agriculture & LivestockII
Irrigation
Leading water to the crops
c. 6,000 BCE
needs 1, 3
8
Building & CitiesII
Arch and Vault
Stones that hold each other up
c. 3,500 BCE
needs 1, 6
9
Time & MeasurementIII
Measures and standards
The cubit, the balance and the metre
c. 3,000 BCE
needs 1, 3, 4
10
Building & CitiesIII
Aqueduct
Water carried by gravity alone
c. 690 BCE
Goal · needs 5, 6, 7, 8, 9