How might this front page sell the newspaper? why would such a story and title be a disservice to the people of new york?

This newspaper claims that there is a $50,000 reward for something. This is a very convincing appeal, and people would likely buy the newspaper in order to discover how they can earn the reward. However, this is simply a trick to attract readers, as the reward is metaphorical. It is a device used to comment on how the Maine (a ship) was thought to have been destroyed by the Spanish.

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.

very positive impact on our industries in the west, sine they promoted settlement and increased the ways in which goods could be transported to market.