Which scenario is an example of a technological development that could cause historical accounts to change over time? Researchers find several arrowheads buried beneath a Viking church.
Artifacts uncovered in the Alps show scientists that early humans dressed in fur.
DNA extracted from an Egyptian mummy reveals the way the person may have died.
Scientists learn about the impact of volcanic eruptions by studying remains from Pompeii.

Two gymnastics teams are intense rivals. the first team has started recruiting new gymnasts from different cities and even foreign countires in an effort to build a stronger team. after learning this, the secondteam begins its own recruitment campaign to find better gymnasts. over a period of months, each team recruits dozens of players, each time trying to find a better recruit than its rivals most recent addition. which idea from the cold war is most similar to this scenario