How does the structure of the "the star-spangled banner" emphasize its main idea?

"The Star-Spangled Banner" is recognized by all Americans as their national anthem. The song was written during the War of 1812, and it talks about the events that took place at Fort McHenry in 1814. The song was originally a poem, and because of this, it uses lyrical language, emotional imagery and vivid descriptions, all of which allow the reader to engage in this patriotic feeling. Moreover, the structure of the poem emphasizes this main idea of glory. Each stanza ends with the phrase: "O'er the land of the free and the home of the brave." This emphasizes the idea of freedom and bravery in the poem.

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.

i'd assume india mainly because of how isolated japan was.   plus it is a whole china away.