The West Side Cowboys kept New Yorkers safe from what?

Here is the question :

THE WEST SIDE COWBOYS KEPT NEW YORKERS SAFE FROM WHAT?

Here is the option for the question :

• Rats
• Freight trains
• Fires
• Speakeasies

The Answer:

And, the answer for the the question is :

Explanation:

[STC0012822]. Freight trains traveling along 10th and 11th Avenues (‘Death Alley’) were notorious for striking and killing pedestrians in the 1850s. The city decided to implement a system of warning riders of approaching trains by sending out “West Side Cowboys” on horseback. Riders signaled passing people with red flags and lanterns. In the 1930s, when safety became a concern, the city constructed elevated tracks.