Answer:
Which situation helped cause the Spanish-American War is the reasons for war were many, but there were two immediate ones: America's support the ongoing struggle by Cubans and Filipinos against Spanish rule, and the mysterious explosion of the battleship U.S.S. Maine in Havana Harbor.
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The fleet improvements that they made were <span>Ticonderoga-class cruisers and Los Angeles-class submarine
</span> Ticonderoga-class cruisers is a guided missile cruiser that has increased capability with aegis combat system and Los Angeles-class submarine is a type of attack submarine that is powered by nuclear.
Supreme Court Chief Justice Roger B<span>. </span>Taney<span> made the pro-slavery ruling in the 1857 Dred Scott Case that deemed blacks weren't citizens of the United </span>States<span>.</span>
I think it is European union but i am not 100% <span />
Eastern European Nations.