If you mean how they exchange goods, originally they used large bronze bullion. They started p[producing coins from 300 BC .
Clarify your question. Why did the vikings encounter ... what?
The first tribe to encounter the settlers was the Powhatan Indians. As in Pocahontas and John Smith. :)
dk
mania surbe
The Romans themselves didn't encounter any problems with their counting system which was in use for over a thousand years. It only is today that people have problems with the Roman numeral system because it doesn't contain a nought figure for positional place value purposes but the positional place value of these numerals are self evident so a nought figure is not needed.
Common prepositions that can be used with "encounter" include "in," "during," "through," "on," and "at." For example: "She had an encounter with a bear in the woods," "We had an encounter during our trip," "They had an encounter through a mutual friend," "I had an encounter on my way to work," "He had an encounter at the restaurant."
The word encounter is both a noun and a verb. Examples: He had a strange encounter on a train. You will encounter many obstacles.
social encounter
The word encounter could be followed by prepositions such as with (encounter with danger). Also the preposition of (encounter of the third kind).
social encounter
An Encounter was created in 1914.
Clarify your question. Why did the vikings encounter ... what?
he did encounter the first nations
You have any chance to encounter neptunium.
The Strange Encounter was created in 2001.
Encounter Point was created in 2006.
The Last Encounter was created in 1967.