Which is an invention that improved safety for railway passengers?

Air brakes were an invention that improved railway safrty

There is no answer but air brakes improved safety because they were much more convenient and safer than any other previous brake,

this might explain why.

hope i helped!!

  Air brakes are used in large heavy vehicles, particularly those having multiple trailers which must be linked into the brake system, such as trucks, buses, trailers, and semi-trailers in addition to their use in railroad trains. George Westinghouse first developed air brakes for use in railway service. He patented a safer air brake on March 5, 1872. Westinghouse made numerous alterations to improve his air pressured brake invention, which led to various forms of the automatic brake. In the early 20th century, after its advantages were proven in railway use, it was adopted by manufacturers of trucks and heavy road vehicles.

These islands/chinampas then provided rich soil for crops with easy access to water. i hope this is correct, im so sorry if its not !