Why did british preserve official document

answer:

the british believed that by preserving official documents, it would be easier for them or any other persons to know about the decisions taken in the past. one can study the notes and reports that were prepared in the past. their copies may be prepared and used in present time if needed so.

i really dont know the answer

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.