What factors led to the blending of cultures in south america

This would be an open primary. a closed primary people can vote only prior to election day if the party if they are registered. independent voters can not participate. there is not a wide-open primary, but there is a semi-open primary.

Sonar is an application of the doppler effect used by submarines.  this test was on k12.

Ibelieve the answer would be a large-scale natural disaster 

  the  peripheral nervous system consists of all of the nerves that lie outside the brain and spinal cord.