Sparta was one of the most important Greek city - states throughout the Archaic and Classical periods and was famous for its military prowess Sparta focused on military training and excellence.
1) Resisting the draft.
2) Setting up anti-war movements (mostly in college campuses)
3) Because people were being forced to be drafted each month (there was a quota) people were angry.
4) MANY people disapprove President Johnson's handling of the war.
hope this helps
The war giving Cuba independence from Spain was the "Spanish American War", since this was the war in which the US engaged with Spain in part because of their ill treatment towards the Cuban natives.
What the writer of the primary source was thinking at the exact time whatever the person was writing about.