A more thorough explanation:

Definition: Subjection refers to the act of subjecting someone to something, the condition of a subject in a monarchy, or the condition of being subject, exposed, or liable.

1. The subjection to torture of prisoners of war is a violation of international law.

2. In a monarchy, a subject owes fidelity and obedience to the Crown.

3. The subjection to secondhand smoke can lead to health problems.

These examples illustrate the different ways in which subjection can be used. The first example shows how subjection can refer to the act of subjecting someone to something, in this case, torture. The second example shows how subjection can refer to the condition of a subject in a monarchy, where they owe loyalty to the Crown. The third example shows how subjection can refer to the condition of being exposed or liable, in this case, to the harmful effects of secondhand smoke.