Countries are more likely to participate in ASPT when they have low transport costs and higher savings. Third, countries of similar economic size are expected to benefit most from SAA training. Economic determinants such as GDP, similarity in economic size and distance between countries correctly predict more than 80% of the SAAs in force from 2020 on. [3] This question shows which goods can be cleared at this preferential rate and in which countries. A common market is a customs union in which the movement of factors of production between Member States is relatively free. The preface (other languages), published in November 2020 by Sabine Weyand, Director-General of DG Trade, provides an overview of the successes achieved in 2019 and the ongoing work for the EU`s 36 main preferential trade agreements.