Ancus Marcius was the fourth king of Rome who ruled from 642 to 617 BC during a period when Rome was slowly building into a potential power within the Italian Peninsula. He was recognized for his significant contributions in the development of Rome’s infrastructure and its initial forays into warfare. Many sources often refer to him as the consolidator of Roman land in the Italian Peninsula, as he significantly expanded the empire through warfare and annexation. In addition to his military conquests, Ancus Marcius proved to be a skillful administrator, focusing much of his reign on urban planning and the concept of promoting connectivity through infrastructure. Under his rule, Rome saw the creation of the first bridge crossing the Tiber River, named the Pons Sublicius. He also established Rome’s port called Ostia, which later became a significant factor for Rome’s maritime trade. This balance between military action and domestic development was a key aspect of his successful rule.