[hinckley buzzard]

Romans were so cool. They also invented cement which could be poured under water. After Rome fell the formula was lost for a thousand years.

[YankeeReb]

They also invented cement which could be poured under water.

That is amazing. I always find it fascinating to read about Roman finds.

[Frantzie]

The so called Dark Ages occurred when Rome fell. Things improved when the Holy Roman Empire formed.

I have no idea how they were able to build the aqueducts without computers. The level had to be a gradual descent sometimes for hundreds of miles. Too steep or not steep enough and it would not work.

They also built incredible bridges so their enemies could not hide on the other side of the river. The army could quickly build these incredible bridges. Waterproof or underwater cement was one of the most important inventions. The roads were incredible and straight. Just amazing stuff.

[Wiggins]

Romans were so cool.

Your not kidding when you said they were so cool.

[Cacique]

The formula is still lost. To tis day we have no clue how they did. Some speculate it had to do with mixing in volcanic ash, which incidentally does make superior cement, but as far as to how thw Romans made cement, we have no clue.