QWhen a number of insurers are liable under one given policy, the principle of insurance that applies is/

The principle of insurance that applies when a number of insurers are liable under one given policy is called "contribution." Contribution is a principle in insurance that determines how multiple insurers will share the costs of a claim that is covered by more than one policy. When multiple insurers are involved, each insurer will contribute a proportionate amount towards the settlement of the claim, based on the amount of coverage that they provided. For example, let's say that a car accident resulted in damages of $100,000, and two insurers are responsible for covering the damages. If the first insurer provided coverage for $50,000, and the second insurer provided coverage for $25,000, then the first insurer would be responsible for contributing 2/3 of the settlement costs, while the second insurer would be responsible for contributing 1/3 of the settlement costs. Contribution is important because it ensures that the cost of a claim is fairly distributed among all the insurers who are responsible for covering it, based on the level of coverage they provided.