Final answer:
The Etruscan civilization profoundly influenced Roman engineering practices, including the development of public sewers, roads, and bridges.
Step-by-step explanation:
The civilization that influenced the Romans to create public sewers, roads, and bridges was the Etruscan civilization. The Etruscans had a significant impact on Roman culture, including their engineering practices. Rome's earliest drainage system, the Cloaca Maxima, and other infrastructure such as roads and bridges were developed under Etruscan influence. Similarly, Etruscan practices in the design of temples, religious rituals, and even the social spectacle of gladiatorial combat were adopted into Roman culture. The Etruscans' ability to control water, with their hydraulic engineering, likely guided the Romans in developing their advanced aqueduct systems.