[pcrh]

For what it's worth, the decline in use of horses was much slower than you might expect. The model T Ford motor car reached peak production in 1925 [0], and for an inexact comparison (I couldn't find numbers for the US) the horse population of France started to decline in 1935, but didn't drop below 80% of its historical peak until the late 1940's down to 10% of its peak by the 1970's [1].

[0] https://en.wikipedia.org/wiki/Ford_Model_T#Mass_production

[1] https://pmc.ncbi.nlm.nih.gov/articles/PMC7023172/

[hn_throwaway_99]

> For what it's worth, the decline in use of horses was much slower than you might expect.

Not really, given that the article goes into detail about this in the first paragraph, with US data and graphs: "Then, between 1930 and 1950, 90% of the horses in the US disappeared."

[pcrh]

Eyeballing the chart in the OP and the French data shows them to have a comparable pattern. While OP's data is horses per person, and the French is total number of horses, both show a decline in horse numbers starting about 10 years after widespread adoption of the motor vehicle and falling to 50% of their peak in the mid- to late-1950's, with the French data being perhaps a bit over 5 years delayed compared to the US data. That is, it took 25 to 30 years after mass production of automobiles was started by Ford for 50% of "horsepower" to be replaced.

The point isn't to claim that motor vehicles did not replace horses, they obviously did, but that the replacement was less "sudden" than claimed.

[throw9384940]

Frech eat horse meat. Cattle is still present in US...