1. Legal Status of the companies: a) a general part: basic concepts for the determination of companies and their significance, b) special part: the legal status of all types of companies (partnership, limited partnership, a company with limited liability and the stock company. 2.Harmonisation procces in the area of business law in the European Union: a) fundamental freedoms of the EU acquis, b) the principles of the EU acquis (freedom of establishment of companies and service providers and national principles), c) new forms of companies in the European Union under the legal framework of company law (EU directive) 3 International trade law with special emphasis on international purchase: a) basic concepts of contract law, b) the purchase contract, c) the United Nations Convention on the International Sale of Goods - The Vienna Convention. 4.International payments: a) bank transfer, b) letters of credit c) bank guarantee.