expert can you tell me the difference between upanishidas, Jainism, mahavira,Buddha, sangha and ashrama..........please tell me the types of ashrama and their explanation

Dear Student

Upanishads are a collection of philosophical texts which form the theoretical basis for the Hindu religion. They are also known as Vedanta. The Upanishads are considered by orthodox Hindus to contain revealed truths (Sruti) concerning the nature of ultimate reality and describing the character and form of human salvation.

Buddhism is basically based on the teaching of Gautama Buddha.  Buddhism though originated in India and Nepal, and is practised in many Asian countries.

Jainism is based on the beliefs of Lord Mahavira. Jainism is primarily confined to India.

Mahavira, was the 24th Tirthankara of the Jaina religion. Born in 599 B.C. as a prince in Bihar, India, he left his family and royal household at the age of 30 and become a monk.The main objective of his teaching was how one could attain the total freedom from the cycle of birth, life, pain, misery, and death, and achieve the permanent blissful state of one's self.

BUDDHA
Siddhartha, also known as Gautama, the founder of Buddhism, was born about 2500 years ago.
The Buddha belonged to a small gana known as the Sakya Gana, and was a Kshatriya.
When he was a young man, he left the comforts of his home in search of knowledge.

Sanghas refer to an association or an organisation containing mostly of members who were Buddhist monks.

Ashramas