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
This sounds like a Revenue this is typically collected through taxes.
Coal, oil, or natural gas.
pls mark brainliest
Answer:
Most importantly, the Washington Monument embodies the awe, respect, and gratitude the nation felt for its most essential Founding Father.
Explanation:
(the others aren't as symbolic)
Hope this helps!
=)
