He was so in to inventions he build and immproved machines.
Refridgerated trucks
1935
Air conditioner
His invention was a automatic refrigerator
a mechine that will never run out.
1949
in 1785 b.c.
The Air Conditioning Unit
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the first automatic refrigeration system for long-haul trucks
he wanted to make the car easier to use that is why he did it
McKinley did not invent anything himself, but his presidency was largely impacted by the improved communications caused by the invention of the telegraph.