Allowed people to travel all across the united states. from east to west and north to south, people were traveling all over the us. in ,000 miles were built total!

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

the united states began searching for a way to reduce oil

-agarvated