Answer:
1902 is the correct answer.
Step-by-step explanation:
Tractors first were manufactured on a large scale in the year 1902.
A tractor is a machine that gives machine power for achieving agricultural works.
A tractor was invented to replace the animals which are used by the people to pull carts.
The invention of the tractor has made the work simple in the agriculture field,fertilizing,planting,transportation and construction purpose.