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Bar and Bat Mitzvah ceremonies mark the transition into adulthood for young Jews. At age 13 a boy becomes Bar Mitzvah and at age 13 a girl becomes a Bat Mitzvah. Bar and Bat Mitzvah ceremonies are significant because they are seen as the time of coming of age, when a child becomes an adult.
The neanderthal's adapted to the cold climate by developing tools like the bone needle to sew warm clothing, and used land bridges to spread to new regions.
Answer:
Prior to European colonization in the late 19th century, Africa had a very long history of state building as well as a rich variety of social formations that were decentralized or stateless. Some of the first examples of state formation in human history developed in the Nile River valley in the 4th millennium BCE. Nevertheless, during most of Africa’s precolonial history, a significant portion of African people lived in small-scale, egalitarian societies in which government was more a matter of consensus among the entire adult population than rule by an elite few. One of the major contributions that historians of precolonial Africa have made is to demonstrate the enormous variety and complexity of precolonial African political systems and to challenge the notion that political complexity only exists in centralized states.
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