Concepts of beauty for the African diaspora can be traced back to the aesthetic and spiritual beliefs of various ethnic groups in Africa which were amalgamated over the five hundred years in which the diaspora was scattered. Today, these cultural values remain rooted in the approach that people of African heritage take in the practice of various art forms. The concept of beauty united to the spirit is central to the aesthetics of West Africa – objects of beauty possess a spiritual as well as external beauty, with even the concept of beauty differing greatly from that of the European. The Yoruba, Ibo, Kongo, Mande and Hausa, all West African tribes, were the predominant groups brought to North America during the slave trade. The Yoruba and the Kongo were the most influential cultures and their influence has prevailed throughout the centuries.