You need to specify which country you are referring to if you want to make it possible to answer your question.
What was Chester A.Arthur's greatest contribution to the county
religion and Christianity
What is Americas greatest contribution to world theater
marc chagall contribution?
Monotheism.
Making Dolly Wood In Tennessee was Dolly Parton's greatest contribution to America.
what is the contribution of manuel l quezon
Rizals contribution of rizals history
the greatest contribution of the Spaniards to the Philippines is Christianity
Spain is a country.
Some say columns while others say pyramids, but I say that arches have been the greatest contribution to architecture.
You're happiest while you're making the greatest contribution. -Robert Kennedy