A sit down strike is a strike which has a somewhat nontraditional nature as it is when employees take "illegal" possession of their workplace by committing to a strike at their work stations. Furthermore, employees 'sit-down' at their station but do not work. It is considered a form of civil disobedience. This differs from a traditional strike as in traditional strikes workers walk off their jobs and therefore can be replaced whereas a sit-down strike causes work stations to be occupied and therefore does not allow employees to be replaced easily.
<span>he dominant social system in medieval Europe, in which the nobility held lands from the Crown in exchange for military service, and vassals were in turn tenants of the nobles, while the peasants were obliged to live on their lord's land and give him homage, labor, and a share of the produce, notionally in exchange for military protection.</span>
I'm not sure if I remember correctly, but I believe it's C.) Passing laws that apply to actions taken before the law was passed.