The Spanish began to settle in the immediately after Columbus’s voyages. A.
coastal areas of California
B.
northern parts of North America
C.
Mediterranean Islands
D.
Caribbean Islands

Definitely the Caribbean Islands!

what is the "did this mean" there is no picture. edit your question with a screenshot.

the great wall of china worked as a defense for the feudal states of the zhou dynasty to the north. during the warring states period more walls were put up to defend the borders of the different kingdoms. it was semi successful because despite the wall, the mongols eventually conquered china also the great wall provided protection to the economic development and cultural progress, safeguarded the trading routes such as the silk road, and secured transmission of information and transportation. @jayxboof