Why did the Roman military use brass instruments? to frighten the enemy to inspire the troops to communicate battle orders to entertain people captured in battle

i wanna say its "to communicate battle orders"

Explanation:

answer; i believe the correct answer is (general);

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.