Different Chinese inventions helped increase long-distance trade. The Chinese built large ships with which helped with
steering. About 1150, Chinese inventors in the Song dynasty perfected the which helped Chinese sailors navigate their
ships' locations and sail farther from land. As a result of these inventions, the Chinese were able to sail to Southeast Asia, India, and other
places to the west.
--World History & Geograpahy

codfish influenced the yankee trade because they traded it with the americans and the americans traded livestock, molasses and stuff that they can make clothes out of (like wool, and leather). they also could make weapons to.

the three roles stated in the dialogue develop the siblings' personalities.

lloyd's personality looks like a trademarketer

dana's personality is afraid from lloyd's behavior and the oldest sister is a decided person who tries to solve any conflict

julius caesar turned the roman republic into the roman empire by coming in and taking the "dictator" role during the time of a civil war (elites vs lower classes) winning battles and reputation, then declaring him dictator for life

hope this : )