Determine the chronological order of the events listed in the left column. In the right hand column, write number
1 for the first event, number 2 for the second, and so on. The
last event should be labeled number 8.
Chronology of Korean (numbers written might be wrong)

1. North Korean Troops invade South Korea.

2. South Korea is largely controlled by North Korean forces; only a small area around the city of Pusan remains in South Korean control.

3. The UN calls on North Korea to remove its forces, North Korea ignores the call.

4. UN troops are sent in and take the key city of Incheon.

5. MacArthur encourages an invasion of North Korea.

6. UN troops push the North Koreans back across the 38th parallel.

7. The UN invasion of North Korea triggers Chinese troops to move in, pushing UN troops back down into South Korea.

8. Chinese communist forces hold Seoul, South Korea's capital.  

the answer would be b).