The Siege of Vicksburg was a major union victory because it allowed the Union forces to control the Mississippi River and had the effect to cut the Confederate forces in half by isolation.
The three countries were
Northern and Western Europe and the Great Britain
A Great Number Of Large Scale Strikes Had Nearly Disabled The Automobile , Steel , And Packing Industries , Among Others
I believe choice D makes the most sense because segregation blocked African Americans from educational opportunities and rights, as talked about in the quote.
Hope this helps!
I take spanish and I'm in middle school I don't understand the question 100% but if you are needing translations you can go to spanishdictionary.com