The tang dynasty contributed to the
development of chinese culture by
(1) creating a shogunate
(2) producing porcelain and block printing
(3) introducing hinduism as a major philosophy
(4) devising a set of laws and carving them on
rocks and pillars

Probably producing porcelain and block printing. Tang Dynasty is the most influential dynasty among Chinese development. During the dynasty, China had attained the highest of its civilization becoming the center of Eastern trade. Through its governance of choosing the best leaders through education and achievement, it had been the foundations of Chinese dynasties. Aside from the said accomplishments, it had contributed to tea finery, art of poems, scroll painting, three doctrines of Buddhism, Confucianism, Taoism, gunpowder-making, institutionalizing Civil Service exams for soldiers, created brandy and whiskey, flame-throwing and merry-making.

My best answer is the haudenosaunnee or the iroquois.