Focus on the last line of this stanza. According to this stanza, why should nations attempt to become imperialist powers?
to win the gratitude of native peoples
to take the easier, more popular path
to win the respect of other industrialized countries
to help their economy grow and to establish new markets

4 copper and gold, the california gold rush is why im pretty sure.

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.