Which does Not explain the spanish conquest of the Aztecs

What did kublai khan learn from the chinese advisers he consulted?

Read the following passage. the early mill girls were of different ages. some were not over ten years old; a few were in middle life, but the majority were between the ages of sixteen and twenty-five. the very young girls were called "doffers." they "doffed," or took off, the full bobbins from the spinning frames, and replaced them with empty ones. based on the passage, early mill girls were mostly young. were mostly middle aged. were of a variety of ages. were mostly children.

Which piece of information would most a historian create an interpretation of this photograph of works in a factory?