Although the terms are similar, neoliberalism is distinct from modern liberalism. Both have their ideological roots in the classical liberalism of the 19th century, which championed economic laissez-faire and the freedom (or liberty) of individuals against the excessive power of government.
The 'feudal system' is the name for a power structure where people held their land in return for promising loyalty, known as doing homage, and providing services such as working or fighting for their lord.
The classical feudalism was based on a set of reciprocal legal and military obligations among the warriors of nobility. This system was the direct result of a need of security for the members of nobility, but for the serfs as well against the invasions and attacks by barbarians, pagans and Islamic invaders.