Etruscan influence on ancient Roman culture was profound and it was from the Etruscans that the Romans inherited many of their own cultural and artistic traditions, from the spectacle of gladiatorial combat, to hydraulic engineering, temple design, and religious ritual, among many other things.
Max Weber believed that! You might find more answers to your other questions on a quizlet i found. https://quizlet.com/177714831/kin-249-quiz-2-flash-cards/
With the expression "greek miracle" we designate the appearance scientific knowledge, their achievements include great greek personages who had achieved really big disciplines like literature, history, geometry, mathematics, philosophy, etc, in the other hand the culture has also took biblical sources, which means accumulated knowledge in the sacred scriptures. so that's how Sumerian's achievements spread to other lands.