I think it's B. A reason to go to a place.
1. weakened Persian and Byzantine rule
2. effective fighting methods.
it was a desert island me and my friends were playing around and all of the sudden this guy came up to us asked if we need help we told him not and he came up at us and hit us
Ulysses S. Grant ... .............
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)