The Triple Entente WAS NOT an alliance - nothing was ever signed by Britain.It was an understanding in the early 20th century between Britain,France,and Russia by which they all agreed that none of them liked Germany much,and effectively admitted that they all therefore had a common interest in opposing German aims.
The Triple Alliance was a full alliance between Germany,Austria-Hungary,and Italy signed in 1882,the purpose of which was to keep France isolated.When WW1 began in 1914,Italy welshed on the alliance on the grounds that the war was caused by German aggression (a popular international view long before the Treaty of Versailles).
To end slavery and racism, It abolished slavery, but still people were racist so they set up Jim Crow laws of segregation. And people still are racist
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Because if they don't have wealth they won't be able to buy their supplies and hire crewmen. They wouldn't be able to get ships and boats.