That is no way to answer someone
On February the 15th, in 1898, The battleship Maine was sunk by the Spanish crown, in Havana Harbor. This was the reason why the United States declared war on Spain in May of the same year.
When the war ended, in December of 1898, Spain had lost all its control over the territories of Puerto Rico, Cuba, The Philippines Islands, and Guam, with some smaller islands as well.
The War ended with the ratification of the Treaty of Paris, that was signed on December 10th, 1898.
Answer:
The Articles did not officially empower Congress to concern itself with religion.
The real causes of World War I included politics, secret alliances, imperialism, and nationalistic pride. However, there was one single event, the assassination of Archduke Ferdinand of Austria, which started a chain of events leading to war
Pros were that they were able to work in the military and serve their country cons were that they were still segregated and after the war their treatment did not differ much from before