Question

What did the historians do to preserve there officials document and letters

Answer 1

Historian during the time of British colonisation preserved official document by creating archives and museum which were built by the british. They also preserved it in government offices as there was a culture of preserving what was valuable to them so as to make prosperity and fame
 

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. ✔✔