The correct answer is A. Technological advances such as s<em>team power, air brakes, automatica lubricators and steel tracks</em> have affected the railroads very positively, since it has made it possible that the rail network could become a safer, more efficient and more reliable means of transportation for goods.
The most important work was
Explanation: Warren completed History of the Rise, Progress and Termination of the American Revolution in 1805, making her the first woman to write a history of the Revolution.
Answer: Europeans brought deadly viruses and bacteria, such as smallpox, measles, typhus, and cholera, for which Native Americans had no immunity
Explanation: These diseases decreased the Native American population and caused an ecological and economical imbalance.May 13, 2019(Fzrom My history folder)
The 14th amendment did much to educate and provide jobs for newly freed slaves following the end of the civil war.
Answer:
answer option 3...
major increase frm the tang era
