Jonas salk became well known in the early 1950s because he

Identiica las similitudes económicas entre las colonias hispana y portuguesa y elabora una lista.

How would lincoln's assassination change the direction of reconstruction? the radicals used this opportunity to take control of the plans. the south refused to cooperate with any plans after lincoln his death would put an end to all reconstruction plans. lincoln was too weak to carry out his plan and now it could be carried out.

Who was marshall mcluhan and what did he have to do with communication theory?