Answer:
The most commonly used methods are: published literature sources, surveys (email and mail), interviews (telephone, face-to-face or focus group), observations, documents and records, and experiments.
Explanation:
Answer:
Historiography, the writing of history, especially the writing of history based on the critical examination of sources, the selection of particular details from the authentic materials in those sources, and the synthesis of those details into a narrative that stands the test of critical examination.
Explanation:
Religion was the centre of life or religion guided the education system.
All matter inside a black hole is theorized to be located at a single point at the very center of the black hole called the gravitational singularity. The black hole had remained a mystery for many years. At the point of gravitational singularity, it has been seen that space time curvature becomes infinite.
