How was this region impacted by surrounding nations and empires from its earliest days up to the beginning of the 20th century?

following type of cultural development caused people to want and buy new products on the market :

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.

what the first or next guy says

it foreshadows the theme of the paragraph and hints the topic that will be discussed in the paragraph!