Sampling, mark and recapture, indirect observation, and direct observation
Explanation:
scientific enlightment evolved between the 16 &1700's, the age of reason, then followed the scientific resolution in the 19th century. the scientific resolution created the first "scientific societies. by 1870, these societies dismissed alchemy and astronomy displaced & other pseudosciences, as being proven untrue.
Answer:
It was impossible for the federal government to enforce the proclamation in the areas where it actually applied—the states in rebellion that were not under federal control.
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Answers A and D I am pretty sure but don't trust me.
The shortest lived known head of state is Jean I of France who ruled and lived for five days in 1316.