`start`-`end` BCE: First wave
start: 3500
end: 600

`start`-`end`: Second wave
start: 600 BCE
end: 600 CE

`start`-`end` CE: Third wave
start: 600
end: 1500

This lasted long past the end of the 2nd wave
culture
traditions

include
persians.txt
greeks.txt
rome.txt
china.txt
chinarome.txt