Historians believe that Florence, Italy, was the birth place of the Renaissance because Florence was a wealthy center of trade in the late Medieval Period. The correct option among all the options that are given in the question is the last option or option "D". I hope this answer helps you in you quest.
The British were taxing the tea and being violent towards the colonists so the colonist got mad and dressed as Indians and threw all the tea in the harbor
Common Sense by Thomas Paine was highly instrumental in convincing the colonists that they should separate from Great Britain, since it called into question the idea that such a vast and prosperous land should need the support of a small island nation (Britain).
Americans were unfamiliar with the territories of Vietnam and ended up having to search manually, house by house, allowing the Viet Cong to dig escape tunnels and snipe American soldiers.