What was the major cause for the shift in European trade from the Mediterranean Sea to the Atlantic Ocean during 1400s

Which of the following was a difficulty faced by the ottoman empire in the 1700s and 1800s?   a.  financial independence      b.  lack of trained artisans      c.  refusal to trade with other nations      d.  rebelling ethnic groups

Humans during the paleolithic era used fire for each of the following purposes except a. for cooking meat b. for use as a weapon c. for heat and warmth d. for treating animal hides select the best answer from the choices provided

Does anyone know why the second great awakening occurred? (i need an answer asap because this is a question on my assignment! < 3 : ))