Answer:
Reasons why chiefs signed the treaty included wanting controls on sales of Māori land to Europeans, and on European settlers. They also wanted to trade with Europeans, and believed the new relationship with Britain would stop fighting between tribes
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During 1989 and 1990, the Berlin Wall came down, borders opened, and free elections ousted Communist regimes everywhere in eastern Europe. In late 1991 the Soviet Union itself dissolved into its component republics. With stunning speed, the Iron Curtain was lifted and the Cold War came to an end.
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.
Better Technological advancements. Boats how there were two types of sails and also the invention of the compass and the astrolobe. Hope it helps.
In August 1945, the US dropped atomic bombs over Japanese cities, Hiroshima and Nagasaki. Hope this helped!