The Egyptians, and later the Greeks, based most units on the lengths of body parts.
Egyptians used the finger (about 1.875 cm), palm(about 7.5 cm), hand (both a 22.5 and 25 cm), and cubit (6 palms, about 45 cm, or 7 palms in the royal cubit).
The Greeks used the finger (daktylos), foot or pous (podes πόδια) and two forms of the pechys (roughly synonymous with the cubit/royal cubit). The Attic foot was about 11.6 inches or 29.6 cm. (The Aegina foot was longer.)
Greeks and Romans used a long length called the stadium(stadion στάδιο), equal to 600 pous or about 185 metres. Romans also used an early "mile" of 5000 feet and a "league" of 7500 feet (about 1.48 km and 2.2 km)
the early civilizations began in Africa but most exact in Zambia
The economy of early civilizations was based around agriculture.
hands span and feet
Inca
The Nile River was the axis of two early African civilizations
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the early civilization in mexico is olmec
Food
Vast Empires
Early civilizations emerged between the Tigris, Euphrates, Nile, and (sorry, blanking out out on the fourth...) Rivers.
Obviously not or we would not be referring to them as "early" civilisations.
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