Question

why did British previous official documents​

Answer 1

Answer:

British previous official documents very confidential in the British period so it was not news in Indian period

Explanation:

The First War of Independence, 1857

Answer 2

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British had preserved official documents, because they thought if they write and record everything, it will later be easier for them to study them and debate. They kept official records of what they thought was right, so that in the future, those records can serve as proofs of all the decisions that they had taken.