Who were the Persians, and how did they threaten the Greek city-states?

what class is this for i can then

this defines the ability for a flex item to grow if necessary. it accepts a unitless value that serves as a proportion. it dictates what amount of the available space inside the flex container the item should take up.

give brainlest

a

explanation:

because the vietnam war was fought in an especially brutal and untraditional way