According to http://www.cal.org/co/bantu/sbeco.html, after the Bantu migration, culture in the civilization spread through Africa. Since the Bantu were dispersed, their iron working and animistic beliefs ran rampant through Africa.
The Bantu also developed farming after they emerged from their nomadic stage; they were earlier to move from hunter/gatherer to farmer than other civilizations.
The Bantu civilization was not like the Romans or Greeks, geographically for one and culturally for another. They Bantu were divided into groups spread all over the lower Half of Africa connected by their same religion and purpose.
According to http://enloehs.wcpss.net/socialstudies/johnson/africa/kenya/spiritual.html, the Bantu had the basic belief was polytheistic. People had to follow a certain set of rules in order to receive abundant harvests and be gifted many other blessings. Any trespasser to these rules was punished. They also believed in many smaller deities that influenced the daily affairs of the people. They believe in life after death. A strange aspect of their religion is that ghosts go on living only as long as people remember them. Offerings are also given to the gods for certain items, such as money.
Finally, according to http://library.thinkquest.org/16645/the_people/ethnic_bantu.shtml and http://www.encyclopedia.com/topic/Bantu_languages.aspx, the Bantu language contains “hundreds of languages that are spoken by 120 million Africans in the Congo Basin, Angola, the Republic of South Africa, Mozambique, Zimbabwe, Zambia, Malawi, Tanzania, and Kenya.” The amount of Bantu languages is unsure, but the most important is the Swahili, which is spoken by more than 30 million people and about another 20 million people understand it, as it is the chief trade language of East Africa.
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