21
just break it down next time like this for example, 10+9 is 19 then add 2 = 21 subtract 3 which then becomes 18 instead of just adding 2 do this (2+1 =3) so 18 plus 3 is 21
Answer: They help to clarify what happened in a crime.
Explanation: Witnesses tell the judge and/or jury everything they know about an event. A witness is someone who has <em>relevant information</em> about a crime that had taken place.
There use of mathematics advanced tools / weapons <span />
Frank Henderson took photographs of historical Arapaho events. He passed down traditions and stories orally to missionaries. Images normally recorded on animal skins were recorded in ledgers.
They split into northern (Platte River) and southern (Arkansas River) groups after 1830. Like many other tribes that moved from the East to the Plains, the Arapaho became nomadic equestrians, living in tepees and depending on buffalo hunting for subsistence.
The Arapaho had a polygynous social structure and a patrilocal residence pattern. A family lived in its own tipi, furnished according to the man's economic status in terms of the horses he owned.
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Japan is an island, making it more unknown to people on larger landmasses like Europe and Asia.
