Answer:
The fact that several nomadic empires, such as the Mongol Empire, have been short-lived is mainly based on the lack of defense structures built in a planned, strategic and orderly manner.
Due to their nomadic nature, these empires and civilizations did not tend to establish new cities or urban centers, with which their conception of territorial expansion was the mere possession of the territory. Therefore, in the event of enemy attacks, the territories were not sufficiently protected to repel these types of attacks. Thus, these empires could not sustain their power because they did not have the necessary building structures for it.
Answer: D prince shotoku writes a new constitution for japan
Explanation:
The theory that was used to justify claims of racial superiority was <u><em>social Darwinism.</em></u>
Social Darwinism was a group of ideologies that arose in the late 1800s in which Charles Darwin´s theory of evolution by natural selection, was used to justify certain social views.
According to the theory, the weak were diminished while the strong grew in power over the weak.
One of the persons who adopted social Darwinism was Adolf Hitler, who considered that the German master race had grown weak due to the influence of non-Aryans, so he targeted certain groups of people that he considered biologically inferior for extermination such as jews, homosexuals, etc.