List the main items egypt obtained in trade

Which of the following items would serve as a primary source for a historian studiying the american civil war

What important race leader of the early twentieth century is being described?

Which of the following is an example of how the principle of beneficence can be applied to a study employing human subjects? providing detailed information about the study and obtaining the subject's consent to participate. ensuring that the selection of subjects includes people from all segments of the population. ensuring that persons with diminished autonomy are protected. determining that the study has a maximization of benefits and a minimization of risks.