Fallout shelters are still someone in use but not for the purposes of nuclear fallout, only severe storms, etc. Th Interstate Highway System is the best choice from this list.
Answer:
Hydrogen
Explanation:
It was the easiest atom to form (one proton and one electron). Hope this helps!
"<span>d. european monarchies,colonize the" would be the best option, since at this time America was worried that increasing foreign influence in the region would lead to a takeover invasion of the US and its territories. </span>
