The analysis of the importance of ambassadors who attempted to acquire new territories enables us to consider this issue from a new perspective. Their activity is followed by taking into account the following criteria: which social background and families they come from, who they come in touch with and negotiate with during their service, how long they stay at the embassy, how often they have to change their place of residence, what the political and economic circumstances in the surrounding area are and how much they influence their work, have they already earned a reputation and are prominent in performing their emissarial service, how often they communicate with the Government, which problems and temptations they face, which arguments they use to assure the owner of a certain area to sell it or to obtain his good will, how much they are paid for their service, if they follow the given instructions or if they sometimes ignore them, what the role of education, customs, ceremonials and the culture of the country they go to is, as well as whether or not the beginnings of professionalization of that service are visible.The results of the research have shown that the Republic of Dubrovnik, in its attempts to expand its borders, had a carefully developed plan, and that the emissaries were its unomittable constituent. Its important to emphasise that one can notice their prolonged staying at the embassies, specialization for a particular person or area, in other words, their professionalization in the service which gain the eary new age characteristics.