The Tribes outside Greek and/or Roman Territories would have commerce with the civilized states and learned to like coinage. When coinage dried up for various reasons, they would strike their own versions. These imitations are usually highly stylized since the tribes could not read or understand the letters and had very little understanding of the representations. Celtic coins were made in Gaul, Spain, England and north of the Rhine. These coins generally date from about 100 BC until the various tribes were conquered by the Romans as late as the time of Christ. There were over 125 different Celtic tribes and most struck coins.