Our ancient history begins from Brahma itself. According to Vedas and Purans we were the first manavs from which rest of manavs were developed. There were seven manas sons from God Brahma which are called Saptarishi. There names are Marichi, Atri, Angira, Pulastya, Pulah, Kutu & Vashishtha.These all were well experts in Vedas.
There was Brahmarishi Angira on the top of among sons. According the Founders of sciences in Ancient India --Brahmarishi Angira first discovered the fire, when there was no alternate of light & heat except Sun. Brahmarishi Angira was married with Daksha putri Smriti. There were two sons named as Bharatagni & Kirtiman and four daughters named as Sinwali, Kuhu, Raka & Anumati from Smriti.
Later on ,during the Chakshusha Manu Kaal, Angira was born from Uroo. He won the earth in war and ruled on the post of Indra. Due to being unbeatable commander he gain the name "Jangid Rishi". Also According to AtharvaVeda, Angira is Jangid. Maharishi Angira was married with two Prachetas Daksha Prajapati daughters named as Sati & Swadha. Maharishi Atharva was born from Devi Sati.

Founder of Jan Parishad ---
In Aryians the first election of Jan Parishad was done by Maharishi Angira. That Jan Parishad was called Ruling Government.

Foundation of Takshshila University ----
Maharishi Angira was the founder of the Takshshila University for the training and expansion of Aryian culture.

Maharishi Atharva was married with Subha. They born a well famous child Brahaspati. Who became the Guru of God. Brahaspati was the famous in the name of Archieture science.
Later on, in Angira hireachy Vishwakarma was born. Vishwakarma was the son of Bhuwan(grand son of Angira). Shri Vishwakarma was born in Magh Shukla Triyodashi.
Vishwakarma was expert in Art, Science & Archietecture. Shri Vishwakarma build up many cities for Gods. They made Alkapuri, Shiv Lok, Brahma Lok for Kuber. According to Skand Puran Nagar Part Shri Vishwakarma prepared many arms. They gifted Kandika to Brahma, Chakra to Vishnu, Trishul to Shiv, Vraj to Indra, Parshu to Agni, Danda to Dharmraj. Shri Vishwakarma also designed wonderful Vimans, such as Garud for Vishnu, Mayur, Pushpak, Shatkumbh, Kamang, Somyan & Vehayas etc.
ArthaVed was written by Shri Vishwakarma,which is known as subset of AtharvaVed. There were five sons from Shri Vishwakarma named as Manu, May, Tvashtha, Shilpi, Devagya which were famous as PanchVidhata.