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WILL GIVE BRAINLIEST!!!!!

Which of these was not an ingredient used in Roman concrete?
A. volcanic ash
B. pieces of tile
C. seawater
D. rebar

Respuesta :

hs726538

I dont konw  A? just doing this to say I did

Explanation:
Ive done some research and i believe the answer to this is D. Rebar.

if it's wrong I'm very sorry

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