What is a Jati? What is its purpose? What is it based on?

Explanation:

Jāti is a group of clans, tribes, communities, and sub-communities, and religions in India. Each Jāti typically has an association with a traditional job function or tribe. Religious beliefs or linguistic groupings may define some Jātis

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ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.