Answer:
b
Explanation:
mark me brainleiest and i did the the edge test
Flashing yellow: 'proceed with caution'
usually to mark presense of a firestation nearby
flashing red: 'stop, then proceed'
flashing red is just a stop sign essentially
By far the greatest factor that characterized the red scare was a deep and often impractical fear of communism within the United States, since communist nations were seen as a threat to the economic prosperity and freedom of the United States.
Answer:
invansions by barbarian tribes
the most straightforward theory for the western rome collaspe pins the fall on a string of miltary