How was it possible for ancient Roman cities to develop farther inland, further away from rivers and coastlines?

They developed systems for moving water and sewage.

The emperor sent governors out to check on the development of inland cities.

The inland cities received state financial support, in return for protection from invaders.

The cities situated themselves among trade routes, and built their economies on trade.

The degree of development of a society can be measured in many ways, but throughout history, water infrastructures have been shown as a great indicator in this regard. A society that dominates water is a developed society. The great classical civilizations, such as the Greek or Roman, were characterized by having large infrastructures such as dams, aqueducts, public toilets or sewerage.

The first that carried water on the surface was the Aqua Marcia, in the capital of the empire. It had a length of 90 kilometers and was built in the year 144 BC. Ten aqueducts supplied water to the ancient city of Rome and supplied it with around 140,000 cubic meters of water per day.

In the palaces of the Roman nobles already in the first century there were pipes for water. In the final part there was a rudimentary artifact that consisted of a perforated cylinder that was inserted into the pipe. It was decorated with the figure of a Gryphon, mythological animal half eagle half lion, where the name comes from.