A．Help the man plan a student rally.
B．Use the student parking lot.
C．Make a donation to support the group.
D．Sign a petition.

A．Employment in the fishing and whaling industries.
B．Nineteenth-century sea captains.
C．The economic importance of sailing ships.
D．The development of the steamship.

A．They were protected by a strong United States Navy.
B．They were supported by a well-developed railroad.
C．Most crew members had experience on foreign ships.
D．As part owners of the ships, captains got some of the profits.