Miriam is writing a draft of an essay about the SS Central America, a ship that sank in 1857. The draft of Miriam's essay requires revisions and edits. Read the draft. Then answer the following:

Which sentence would make the best transition between Sentences 2 and 3?

1. In the 1850s, both San Francisco and New York were bustling cities with busy seaports.
2. In Panama in the 1850s, money in the form of gold coins was usually in great demand.
3. Gold coins were used as money rather than saved as souvenirs in both San Francisco and New York.
4. The trip from Panama to New York City was often the most dangerous part of the journey.