Were the ideologies of Hinduism and Buddhism more similar or different?

Buddhism and Hinduism agree on karma, dharma, moksha and reincarnation. They are different in that Buddhism rejects the priests of Hinduism, the formal rituals, and the caste system. Buddha urged people to seek enlightenment through meditation

believe that Hinduism and Buddhism are more different than they are similar. Although they both started in ancient India, Buddhism has a clear founder, the Buddha, while Hinduism does not. The two religions also differ in their manner of worship: Hinduism is a polytheistic religion, while Buddhism does not involve worship of a deity. One small similarity between the two religions is the shared belief in reincarnation. Otherwise, the two religions are quite different.

Explanation:

A cause of feudalism or a characteristic of the system of feudalism

Roman kings huge land grants to the nobles which provided knights and soldiers which is the characteristic feature of feudalism. Due to the existence of feudalism, the last roman king was dethroned as the poor began to protest due to the oppression of the rich and hence it is the cause of feudalism. When feudalism exists, people ‘security is challenged and hence it is the characteristic feature of feudalism.  

Social stratification into different class based on the financial prosperity was the cause of feudalism. When feudalism exists there will not be the strong central government. During the period of feudalism, people turned to the Christian church and feudal lords gifted lands to the development of church so it is the characteristic feature of feudalism.