In a Roman building, what was the "Hypocaust"?
Correct answer: The central heating system
Dayrell
Wow i never knew that at all QuizzLand thank you
Maestra
Very cool! I never knew…
PerkyLin
I knew geared floors were used by Romans, too bad it wasn't used more for the people.
Aseem Chawla
Well Well ! Pakistan was born in 1947. Since when did it become an ancient civilization?!!
Laura
It's still used in Korea, known as ondol.
Cucunwa
Awesome I never knew 😃
Kz
Galing naman
ChewyGazelle68623
Them too??!