They were first used as evidence in 1892.
Answer:
B
Explanation:
Because according Wikipedia it says it have them power because people had to work for an long day
Mansa Musa is one of the most powerful rulers of the world ever.
Explanation:
Mansa Musa was a power ruler of Mali because he is the first major ruler of the region above Sahara near to the western African region.
Mansa Musa was a power ruler of Mali but he was not from Mali. HE had been a man of the Western African region only but he came to found the empire that was based around Mali.
Mansa Musa was a power ruler of Mali so he had built an empire around Mali and his riches and prosperity had made this empire reach pout to the world far and wide.
Scientists control the variables in science experiments, specifically the independent variables. When a scientist changes a variable, they observe how it affects the other variables.
Answer:
best example of propaganda is option B.