What empire witnessed the invention of paper

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.