Communism
No, socialism is an economic system with specific economic models. It is not as much a political ideal as it is an economic system intended to lead to certain social outcomes.
determines the number of representatives
Yes it is true. Lords and Vassals were part of the social, political, and economic organization known as feudalism or the manorial system.
i think it is drifferent
What the Economic system v. political system
A system of politics and government. It is usually compared to the legal system, economic system, cultural system, and other social systems.
Feudalism pervaded all forms of life in the middle ages. There was a ruling class ( political/social) that controlled the economic system. The peasant and serf classes who did the labor for the ruling class were kept that way through taxes ( economic) and the inability to move out of that class to a upper class ( social/political/economic).
The progressive era was a combination of middle class , upper middle class and even higher classes that challenged the hierarchies of the rigid political system, bureaucracy in social system with initial monopolistic economic growth prospects.
I believe it is better to say 'politico-economic system', as a single wording or separately as 'political and economic systems'. They both mean thesame thing, and infer that there is a strong interchange between the political system (with institutions & Politicians as actors) and the economic system (with corporations & businessmen as actors). In this situation, those who have political powers control the economic system, and those who have economic power influences or control the political system.
Feudalism
Socialism is an economic system characterized by social ownership or control of the means of production and cooperative management of the economy, and a political philosophy advocating such a system.
fascism