The Fujiwara Clan was a powerful and influential family in Japan during the Heian period (794-1185). They played a significant role in the political landscape by marrying their daughters into the imperial family, which allowed them to gain considerable power and influence over the emperors. The clan's members often served as regents and advisors, shaping the governance of Japan during this era. The Fujiwara were known for their cultural contributions as well, promoting the arts, literature, and Buddhism. Their influence began to decline in the late Heian period as military clans like the Minamoto and Taira rose to power, leading to the eventual establishment of the Kamakura shogunate.