Which principle includes both preventive measures and remedies unavailable in standard law?

The principle that includes both preventive measures and remedies unavailable in standard law is equity. Equity is a branch of law that developed alongside common law, and it focuses on fairness and justice, providing a means to achieve just outcomes when traditional legal remedies might be inadequate or unavailable.

Equitable remedies go beyond those available in common law, which generally provides monetary compensation for damages. For instance, in cases where someone seeks to prevent harm rather than seek compensation after the fact, equity can provide remedies such as injunctions—orders to stop certain actions—specific performance, or reform, all of which are not typically available through common law channels.

Equity also emphasizes the idea of balancing the interests of the parties involved, considering the specific circumstances of each case. This flexibility allows courts to tailor their decisions to achieve fair outcomes, making equity a vital aspect of the legal framework, especially in situations involving trust, fiduciary duties, and family law matters, where conventional legal remedies may fall short.