"background radiation" because if looked at right it can show u how old it is and since the big bang caused and enormous amount of light to come off it left a lot of radiator behind.
hope this is the correct answer.
tbh i haven't studied much about this so i had a little help
-harley
<span>Nevada and California is your answer</span>
Someone who experienced it and was there when it happened
The appropriate answer in A. Building the Berlin Wall. The official purpose of the Berlin Wall was to prevent West Germany from undermining the political ideals from East Germany. The Wall also prevent East Germans from going to the West.
Construction of the wall began in 1961 and was used until it's 'fall' on November 9, 1989. The wall was initially concrete and barbed wire but was fortified over time with various check points to monitor traffic.