| The Roman army's tactics, weapons and overall discipline were just amazing. Just as the Greek empire before them, they so completely outclassed all opposition that its almost scary. They also were their own engineering core, that is to say, they Roman soldiers built all the stuff that we still sit in awe of. The roads, the aqueducts, etc, etc.
Rome is completely unsurpassed in human history for what they did with the technologies they had. |