Answer:
Unrest began in South Central Los Angeles on April 29, after a trial jury acquitted four officers of the Los Angeles Police Department (LAPD) for usage of excessive force in the arrest and beating of Rodney King, which had been videotaped and widely viewed in TV broadcasts.
Caused by: Reaction to acquittal of four policemen on trial in beating of Rodney King; ...
Because it was an easy source of water for their needs that required it and it was also and easy way to transport supplies to the battle sight if an army was in a foreign location. Hope this helps, if you need clarification let me know?
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)
.....................................
He argued for basic rights. And he wants us to accept that back people as well have basic human rights. He was speaking on basic American rights