Kushite ancestors built speos during the Bronze Age between 3700 and 3250 BC.Bloomeries and blast furnaces were also created during the 7th centuries BC in Kush.
Imuzaran ən Koushites aqanan sɗeotan agud ən azaman wan bronze,jar 3700 ad 3250 dat J.-C. Inašaran ad alfonatan zajroten atiwəjan deɣ ɣor ikuy ən 7e elan darat J -C.ɣor Koush.