Answer:
Helped with transportation of goods and people.
Explanation:
The transportation of goods made it easier to take food it other things across the states and could even carry people to other states faster than horseback or any other mode at that time.
On this problem you don't need to subtract. They want to know the total amount of people who attended so you would add.
1 1 1 (carried over numbers)
12,679 (Line it up with 8491, ones place to ones place and so on)
+8,491
21170 (answer)
True because the works are iconic and during this period it was many great achievements by Rapheal, Michelangelo, and Leonardo
