If the dark ages wasn't actually a berseria why would the renaissance be considered a rebirth what things were brought back to life that were lost during the middle ages

Which of these resulted in an actual slow down or limiting of the u.s. and soviet nuclear arsenals?

The massacre at sand creek was an attack by a colorado militia on peaceful american indians. a colorado militia on a group of dakota warriors. american indians on peaceful white settlers. federal soldiers on a group of cheyenne warriors.

What river systems the worlds earliest known civilization develop ?