Why was Roman Concrete Forgotten during the Middle Ages?

Roman Concrete was forgotten during the Middle Ages because people didn’t know how to make it anymore.

Concrete, like the kind you see in sidewalks and buildings today, is strong and lasts a long time. The Romans used Roman concrete, which was even stronger than modern concrete, and it stayed that way for hundreds of years. But when the Roman Empire fell, things changed.

Think of Roman concrete like a special cookie recipe that your grandma knew by heart. She made the cookies every year, and they were always delicious. But one day she passed away, and no one remembered the exact ingredients or how to mix them. The new family members tried to make cookies too, but without the right recipe, the cookies didn’t turn out as good.

That’s what happened with Roman concrete. People didn’t know where to find the special ingredients, like certain kinds of rocks, or how to mix them properly. So they used different materials and made buildings that didn’t last as long.

Later, when people started building again, they forgot about the old, strong recipe and just used new ones instead.