During the 14th - 16th centuries, the economic relationships between Moldavia, Wallachia and Transylvania were very intense. This fact is due to their economic development and to their position along the commercial transit roads that connected at that time the Western and the Central Europe to the Danube's mouths and to the Black Sea; these roads were used to transport the handicraft wares - cloths, tools, weapons, "small goods" from the Low Countries, Germany, Czechia and the Eastern wares - spices, woven materials, adornment objects from the Far and Near East to the West. The ware exchange between Wallachia, Moldavia and Transylvania produced a strong economic interdependence of the three countries.

The commercial relationships between the three countries, including the transit trade, were made especially in the three great handicraft and trade centres on the Transylvanian border: Sibiu, Braşov and Bistrita. Their economic development, trade privileges and favourable geographical setting provided them with the possibility of playing an important role in the economic relationships. Specification: regarding the trade trans-Carpathian relations, Sibiu was oriented nearly only toward Wallachia, Bistriţa only toward Moldavia; by its geographical setting, in the south-eastern part of Transylvania, Braşov had close trade relations with both Wallachia and Moldavia.

Subsequently, Braşov had the economic role of common market for the three Romanian principalities and of meeting place for the Wallachian, Moldavian and Transylvanian traders.

Braşov was a market for the natural Moldo-Wallachian products, a centre supplying Wallachia and Moldavia with handicraft and agricultural tools and weapons. Here we see how the personalities of that time understood the economic importance of Wallachia for Braşov and Ţara Bârsei - we have the letter of the great Wallachian home minister Stanila, in which he wrote to the inhabitants of Braşov: "you know very well that you could not live without us, just as well as your country could not live without our country". There are some more revealing facts: in the beginning of the 16th century, the trade rate between Braşov, Wallachia and Moldavia raised up to 167,000 gold ducats, according to the account book of 1554; by the half of the 16th century, according to the account book of 1554, 1070 merchants from 171 localities from Wallachia, Moldavia and Transylvania, met in Braşov and effectuated 2,866 transports.

Even the fight for the market, from the 15th - 16th centuries, between the Braşov traders and the Moldo-Wallachian ones, was one of the melting economic purposes manifestation forms. For example, around 1431 - 1432, Vlad Dracul, claimant to the Wallachian throne at that time, asked permission from the Braşov traders to ban the Moldavian traders of having commercial activity in Braşov, because of his wares that had been confiscated in Moldavia.

Thus, Braşov became the main axis of the economic relationships that existed between the three countries; during the 15th - 16th centuries it gained the role of common market, being the first constitutive element of the internal developing market of the other Romanian Principalities.

By the half of the 16th century, in 1550, Georg Reichersdoffer righteously characterised Braşov as "the main market of the neighbouring countries and a common sale place of all sorts of goods"; in 1565, Giovannandrea Gromo said that Braşov is a "meeting place for all the neighbouring countries, a common wares market".