Yes, it is true that the<span> core of the Earth is believed to be composed of iron and nickel, since the inner core is believed to be made of iron, with the outer core being made of nickel. </span>
Answer: D is right. But there are also many other reasons.
Explanation: League of Nations was formed by Allied powers (from the WW I) so consequently it was viewed as "League of Victors". Moreover USA did not join, may other states did not join and later on League of Nations was unable the prevent outbreak of WW II.
Answer:
Reform efforts during this time gave birth to a number of important changes in the United States and Great Britain. These included mandatory public education, child labor laws, and eight-hour workdays. Reforms also addressed minimum wage, compensation for workplace accidents, and improved sanitation infrastructure.
Explanation: