the correct option is D
Roosovelt corollary,Monroe doctrine diplomacy and open door policy
Roosovely corollary was T. Roosovely addition to the monroe doctrine, which argued the that the usa was obliged to police over Latin countries to enforce their obligations. The monroe doctrine was the official USA policy for the 19th century which called for usa not to intervene in other countries affairs. Open door policy was the policy USA adopted inorder to stiffle ranfing rivaly over the big markets of China.
Communist Revolution took place in 1917.
Answer:
unification of Italy into one monarchy.
Explanation:
Economics is the study of how societies use scarce resources to produce valuable commodities and distribute them among different people. Behind this definition are two key ideas in economics: that goods are scarce and that society must use its resources efficiently.
Sumer, the Akkadian, and the Babylonian
