¿Cuáles son las cuatro fases que cubrió el origen de la escritura?

What event was one of the greatest factors that led to massive emigration from ireland to the united states in the mid—1800s

The two-factor theory of emotion was proposed by

Humphreys collecting data for the tearoom trade study under the pretense that he was a lookout is an example of a violation of the principle of: a. justice.b. beneficence.c. respect for persons.