From the Euphrates, brickcraft spread eastward to Persia, India,
and China, and westward to Egypt, Greece, and Rome. The Romans, who
were the great builders of ancient times, made very extensive use
of brick in their immense building operations, wherever good clay
could be found. From the numerous monuments of Roman brickwork that
still remain, the brick are seen to be of an excellent hard-burned
quality, and generally of a large, flat, thin rectangular or
triangular form.