C) improvement in the standard of living for all people
Explanation:
In industrialized countries, the period 1870-1890 was the era of the most rapid economic growth in their history. Due to the sharp increase in labor productivity and falling prices for consumer goods, the lifestyle has been significantly improved. Improving transport and accelerating trade has prevented hunger in the event of crop failure in certain regions. In the industrial era, a mass education system was formed. In general, the standard of living of the population as a result of the industrial revolution has grown. Improving the quality of food, sanitary conditions, the quality and accessibility of health care has led to a significant increase in life expectancy and a drop in mortality.
It would be "D. Presidential" republic that is the most <span>common form of government system in Europe, since Europe has shifted largely towards democratic principals. </span>
It would be the "c. Taklamakan" that was one of the most dangerous spots along the silk roads, since this area was both physically treacherous and lined with thieves
