Add to ORKGThe range of the real freedom of contracts in private law was both a growth factor of societies as well as a measure of the extent of their internal changes. The practice worked out by the Roman lawyers, though limited formally by contract nominalism, became the basis of modern-day solutions. In spite of a simultaneous reconstruction of the social and economic systems which may be summed up after H. Maine as a development from status to contract – the principles of the freedom of contract together with their fundamental limitations, had remained valid. In this context, one may mention the laws which protect the rights of economically weaker subjects, such as the ban on the loss of the pledged asset (lex commissoria), the permissible relatio...