Question

among the historical source .... source are based on modern tecnology

Answer 1

Explanation:

"Among the historical sources, oral sources are based on Modern technology.

Oral history marks several incidents and events which are not available in written notes.

This oral history and memories of ancient times have to be collected and to be published for the knowledge of people around the world in libraries and other resources available.

The historical events can be heard from many places and have to be joined altogether from oral sources to written and preserved for the next generation.