How did West African and/or Mongol rule lead to increased cultural diffusion? Please answer in a 8 to 10 paragraph.

Rank the following from most to least devasting: ordovician, permaian, cretaceous, pleistocene

Which of the following correctly describes a repurchase agreement? the sale of a security with a commitment to repurchase the same security at a specified future date and a designated price. the sale of a security with a commitment to repurchase the same security at a future date left unspecified, at a designated price. the purchase of a security with a commitment to purchase more of the same security at a specified future date.

Which type of learning occurs when you observe how other people act?