Around 3500 BCE, metal workers discovered an alloy of copper and tin known as that made it ideal to use for tools and weapons.

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.

hello,

the steamboat is your answer.

it seems like its the only form of transportation on the choices.

barack obama

44th president of the united states