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Tractors normally pull ploughs (plows).
Yes, draft horses were bred to pull plows and other farm machinery.
oxen, slaves
Their strength is large enough for them to pull plows!
On farms some horses pull plows to plow fields. Sometimes they pull buggeys to carry their owners from one place to the next. But most commonly horses are just ridden around for the pleasure of their owners.
To pull heavy wagons, plows and things like that.
To pull implements like plows, combines, haybines, etc.
Cattle, and related bovids around the world, are used to pull a variety of machines and vehicles ranging from carts to plows.
Farmers used mules to pull the implements such as plows.
They used beasts of burden (horses, mules, oxen, etc.) to pull their plows.
Tractors, locomotive engines. Oxen, curiously, push plows even though they are in front. This is due to the design of the harness.
An ox wears a yoke around its neck so that it can pull large loads like wagons or plows.