Who said “we must keep the world safe for democracy ? ”

Woodrow Wilson

The world must be made safe for democracy. Words used by President Woodrow Wilson in 1917 to justify his call for a declaration of war on Germany.

Explanation:

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

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939