The answer for the question would be A.
Answer:
#7 is self-designation by Indo-Iranian peoples in ancient times
Explanation:
Answer: A
People in the North wanted the whole Unuted States to be without slaves, but the Southern United States disagreed. They thought slavery was fine, but then the South declared war on the North, and launched a bombing raid on Fort Sumter, SC.
The answer is A since they did show how mathematics and measurement could be used in scientific investigation
