could you show the document?
Answer: Travel time decreased as the steamboat could now travel against the current.
While it was true that western lands were somewhat more fertile than the now-depleted lands of the East, many of the pioneers were attracted to the frontier in order to speculate in land, i.e. to purchase large quantities of cheap government land and to sell it at a profit to later comers
Bān Zhāo, courtesy name Huiban, was the first known female Chinese historian. She completed her brother Ban Gu's work on the history of the Western Han, the Book of Han. She also wrote Lessons for Women, an influential work on women's conduct. She also had great interest in astronomy and mathematics and wrote poems, commemorative writings, argumentations, commentaries, essays and several longer works, not all of which survive. She became China's most famous female scholar. Hope it helps
Hi there~
I believe it was during 1859-1860
I hope that helps!