Editing History of Tanzania (section)

=== Iron Age ===
Approximately 2000 years ago, [[Bantu languages|Bantu-speaking people]] began to arrive from western Africa in a series of migrations collectively referred to as the [[Bantu expansion]]. These groups brought and developed ironworking skills, agriculture, and new ideas of social and political organization. They absorbed many of the [[Cushitic]] peoples who had preceded them, as well as most of the remaining Khoisan-speaking inhabitants. Later, [[Nilotic]] pastoralists arrived, and continued to immigrate into the area through to the eighteenth century.<ref name="Absolute">{{Citation|title=History|url=http://absolutetanzania.com/history|archive-url=https://web.archive.org/web/20091228021654/http://absolutetanzania.com/history|url-status=dead|newspaper=Absolute Tanzania|access-date=22 March 2010|archive-date=28 December 2009}}</ref><ref name="O'Meara">{{Cite book  | last1 = Martin  | first1 = Phyllis  | last2 = O'Meara  | first2 = Patrick  | author-link2 = Patrick O'Meara  | title = Africa  | publisher = [[Indiana University Press]]  | year = 1995  | isbn = 978-0-253-20984-9  | url-access = registration  | url = https://archive.org/details/africa00mart  }}</ref>

One of Tanzania's most important Iron Age archeological sites is [[Engaruka]] in the [[Great Rift Valley]], which includes an irrigation and cultivation system.