First of all, you dont have the answers.
But the answer is "Companies replaced hand-operated brakes with air brakes on trains" is the best answer because this stopped many of the fatalities that were caused by brake failures." which is I say on what you are using D
B is the correct answer for your question.
1. Is a and 3 is d easiest stuff I ever learned
we, again, went in and did what the USA does best-win the war. ... You can't just bounce back from that. .... Washington to have a mutually beneficial end to their involvements with one another while claiming victory for themselves.
The three branches of government are:
- legislative government
- Judiciary government
- Executive government.
<h3>What are the role of the
branches of government?</h3>
- Legislative government: Its main role is to implement policy and laws.
- Judiciary government: Its main role is to interpret the law.
- Executive government: Its main role is to enforce the law created by the legislative.
Read more about branches of government
brainly.com/question/914106
#SPJ1