Contracts Obligations (Law) 4 Civil law 3 Law 3 Breach of contract 2 Commercial law 2 Impossibility of performance 2 Mistake (Law) 2 Third parties (Law) 2 Assignments (Law) 1 Common law 1 Consideration (Law) 1 Contracts (Roman law) 1 Contracts, Aleatory 1 Corporation law 1 Damages 1 Equity 1 Interpretation and construction 1 Juristic acts 1 Law reform 1 Law, Visigothic 1 Legacies 1 Option (Contract) 1 Penalties, Contractual 1 Philosophy 1 Possession (Law) 1 Rebus sic stantibus clause 1 Risk 1 Sales 1 Social contract 1