The major route that connected ancient Rome to its provinces across Europe was the Appian Way, known as "Via Appia." This road, constructed in 312 BCE, was one of the earliest and strategically most important Roman roads. It connected Rome to the southern regions of Italy, facilitating military movements, trade, and communication. The Appian Way exemplified the Roman engineering prowess through its construction and durability, influencing the development of road systems throughout the empire and contributing to its expansion and administration.