Why did General Butler return slaves from New Orleans to planters that were loyal to the Union and not to the Confederates?

What does the man of the left represent? what does the men on the right represent? why is there a hat on central and south america?

How are the freedom of religion and the freedom of assembly alike? both involve the freedom to express oneself. both were an original part of the constitution. both were practiced by the early puritans. both were denied to immigrants.

During the cold war, the united states was involved in certain regional conflicts due to fears later called the domino theory, which stated which concept?