What was the advantage of building the Roman army in the battle with the Macedonians?

The military formations of the Macedonian troops for a long time had no equal and were the most powerful. This formation was introduced in the 4th century BC, when, instead of special tactics during battles, the troops collided directly, and it was important to maintain discipline and keep the formation. The ranks were very dense, and the soldiers were heavily armed. This prevented them from being maneuverable, as a result of which they succumbed to the Roman legions. The latter were also disciplined, but more maneuverable, and could fight in mountainous areas.