Early humans communicated using languages that have since been lost. These early forms of communication helped them coordinate and survive in their environment. Class 6 Social Science Chapter 4 Timeline and Sources of History NCERT Book Exploring Society India and ...
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Many Indian calendars rely on the positions of the sun and the moon to define the months of the year. Class 6 Social Science Chapter 4 Timeline and Sources of History Social Science Textbook Exploring Society India and Beyond Session ...
Historians gather information from as many sources as possible and compare them. If the sources confirm each other, they piece together history; if they contradict each other, historians must decide which source is more reliable. Class VI NCERT Social Science