Mohammed unquestionably purified Judaism and in particular Christianity. Allah was a truly universal God, with no chosen people, no feelings about race …. Likewise, Mohammed purified the worship of the One God.

— Herbert J. Muller, The Loom of History

This author most likely agrees that Islam –

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

a.

congress passed laws allowing for free passage between states.

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.