1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Diano4ka-milaya [45]
3 years ago
14

Which best describes a development that improved railroad safety? A. Railroads adopted standard time to coordinate schedules. B.

Railroads offered fold-down beds so that people could sleep more comfortably. C. Companies standardized track technology so that they could use each other’s tracks. D. Companies replaced hand-operated brakes with air brakes on trains.
History
2 answers:
sweet-ann [11.9K]3 years ago
7 0

Answer:

Option: D. Companies replaced hand-operated brakes with air brakes on trains.

Explanation:

In the early period, trains manually stopped by involving in hand-operated breaks. The handbrake worked by handling large wheel in the coach, attached to chains and levers which set brake pads under the train. To improve the safety of the rail coach, air breaks replaced because they were much more powerful and reliable, than the manual one.

xxTIMURxx [149]3 years ago
3 0

The correct answer is option D. "Companies replaced hand-operated brakes with air brakes on trains". The development of air brakes on trains was a significant improvement of railroad safety. Air brakes function much more faster than hand-operated brakes, because hand-operated brakes required that the brakemen turned the brakes in one car and jump to the next to set the brakes on, and so on.

You might be interested in
All of the following are issues that immigrants faces except for what? Crowded living spaces Disease spreading rampantly Lack of
ddd [48]
The answer to that is disease spreading rampantly
3 0
3 years ago
Prior to WWI, European countries dramatically increased military spending. Look at the chart. Why does the United States spend s
Veseljchak [2.6K]

Answer:

Because we make people mad alot and we have of threats like terriost and yeah

Explanation:

hope this helps

8 0
3 years ago
In march 2002, _______ signed an accord that restructured yugoslavia, thereby creating two semi-independent states.
zhenek [66]
<span>Serbia and Montenegro </span>
4 0
2 years ago
Why is it difficult for historians to study early civilization
drek231 [11]

To study history artifacts are needed and often they are lost to history because they have been buried and not found, are under water, are broken or ruined in some way, the site has been raided by thieves and items taken, war often interrupts digs or the archeological sites are destroyed by armies and information is lost. These are just a few things that makes it hard to study early humans and things are found all the time that historians learn from.

Historians need good sources (preferably, written sources) on which to base their studies. If early societies did not leave any written information , historians have to go by other indications like the remnants of villages and temples and perhaps some drawings or carvings. Sometimes these give an indication how societies were (or might have been) organized, but without written confirmation you can never be completely sure. so is that help full or not

7 0
3 years ago
Whats the outcome of the three-fifth's compromise? what it was about?
densk [106]

Answer:

three fifths compromise was about giving African Americans the right to vote but their votes would only count as 3/5 of a person's

Explanation:

8 0
2 years ago
Other questions:
  • What compromise ended the Third Crusade?
    13·2 answers
  • What was the purpose of the Edicts of Osaka
    10·1 answer
  • During World War I how did war focused in economies change the way industry operated?
    10·1 answer
  • Alliance among Germany, Austria-Hungary, and Italy at the end of the 19th century; part of European alliance system and balance
    8·1 answer
  • Explain what the 14th amendment- how it was passed and what its consequences were in terms of how it affected the relationship b
    5·1 answer
  • *
    6·2 answers
  • Which phrase best completes this diagram on the effect of a Supreme Court
    7·2 answers
  • What is the SIGNIFICANCE of Federalist Papers?
    13·1 answer
  • Skim the Universal Declaration of Human Rights document again. Write a two- to three-paragraph response comparing this document
    15·1 answer
  • What effect did the Battle of Fallen Timbers in 1794 have on the Indigenous people of the region?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!