In the 1920s and 1930s, the Japanese invaded surrounding territories mainly because they "needed natural resources" to fuel their domestic growth, since Japan is a very small island and lacks many of these necessary resources.
Spanish conquistadors in the New World sought almost exclusively gold. This was the primary reason they were endorsed in their ventures by the kings/queens, who paid them handsomely.
Three factors fueled American Imperialism.
Economic competition among industrial nations. Political and military competition, including the creation of a strong naval force. A belief in the racial and cultural superiority of people of Anglo-Saxon descent.
I think the answer is a. but I could be wrong.
I can answer number 7, the aryans were the “race” of people who inhabited Europe. Hitler described them as the perfect race when having blonde hair and blue eyes.