Answer:

Las organizaciones de artesanos de la Edad Media que buscaban regular el precio y la calidad de productos como el tejido y la herrería se conocían como gremios. Los gremios sobrevivieron hasta el siglo XVIII.

Answer:
transforming inexperienced troops into an effective military force
.
Explanation:
Pershing led American Expeditionary Forces during last phase of WW1. He is famous among other things for being promoted to the rank of General of the Armies. During WW1 he was at the head of American troops that fought alongside British and French troops. Although his army was inexperienced in battle he led them to major victories.
Answer:
B
Explanation:
Two Houston surgeons, Michael E. DeBakey and Denton Cooley, have been in the forefront in developing heart surgery and heart transplantation. DeBakey and his team performed the first successful coronary artery bypass graft procedure on November 23, 1964.
Scientists now blame gerbils and not rats, but back then they mainly blamed Jews? Hope that helps