What was polk’s comment after Mexico attacked and killed 11 u.s soldiers

Pros of US involvement in the Korean War:
1.) They helped fight communism.

2.) Korea had more military defense and equipment as provided by the American government.

Cons of US involvement in the Korean War:

1.)   Thousands of lives were lost during the process. The casualties were inevitable given the great devastation done on the country.

2.)   Some other countries did not approve of the US involvement with the Korean War.