What is not true of european empires before ww1

Read the quotation from the declaration of independence. "for cutting off our trade with all parts of the world." which reason best explains why this grievance was included in the declaration? the colonists could not get goods without the crown's permission. the colonists could export goods only to britain. the british closed ports to punish the colonies. o trade focused on generating income for the crown only.

American troops were worried about cantracting in cuba a. yellow fever b. hepatitis c. polio

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