These trade networks may have been established prior to the Roman Empire and suggest a complex and advanced social structure and organisation among the Germanic tribes and societies. Scandinavian amber has been found at Mycene, in Greece. This brings the term "tribe" into question, many archaeologists have abandoned this term because it provides a faulty image of the Germanics. This term may envision an image of Germanics as primitive people. Another aspect of Germanic-Romanic inter-relations is the exchange of gifts. Artifacts may have been traded to the Germanics as diplomatic gifts. For instance by diplomacy. Gifts were given to enhance and strengthen alliances, bonds and the likes. Archaeologist Lynn F. Pitts writes about the Roman relationship to the Marcomanni and the Quadi that:  "Rome was perhaps concerned to cultivate these Germanic tribes in order to counterbalance […] their neighbours. Diplomacy rather than military strength kept the peace along […] the frontier." The Roman empire became increasingly vulnerable as they expanded, thus stretching their military capacity. Pitts go on to write that the Marcomans were a very strong military power, with a standing army of 7000 infantry and 4000 cavalry. It's obvious that the Romans wanted to maintain peaceful relations with certain Germanic tribes, especially towards the end of the Roman Empire, when it became ever increasingly weak. Pitts points out that ”…it is apparent [sic?] that, apart from short periods of hostilities, relations between Rome and the Marcomanni and Quadi were friendly…”. It became more and more common, as the Roman Empire neared its end, that the Romans paid tribute to Germanic armies who threatened to invade Rome. This takes us to the plunder aspect. As the Western Roman Empire collapsed, Germanic tribes reclaimed land taken by the Roman Empire. Thus many Roman objects were obtained, proliferating throughout much of Germania, most likely via the already existing trade networks, all the way to Scandinavia. War spoils may have also added to proliferation of Roman artefacts. This may also explain the high number of Roman arms in Germanic hands, despite the Roman arms embargo. Two silver cups found in a grave in Hoby, in Denmark, are likely to have been war spoils from the Battle of the Teutoburg Forest in 9 A.D.