How did Etruscan influence contribute to the military successes of the Romans?

A. Etruscan building techniques were followed by the Romans, allowing them

to build tiled military bases.

B. Etruscan leaders taught the Roman military to divide their soldiers into

legions.

C. Etruscan metalwork techniques allowed the Romans to create swords

and spears.

D. Etruscan nobles taught the Romans to embrace the concepts of discipline

and loyalty.