The general consensus is that the greatest obstacle to a successful invasion of D-Day was the problem posed by the English Channel.
An invasion across the English channel had only been done successfully once before in history, in 1066 when William the Conqueror led the Normans across to defeat Harold at the Battle of Hastings.
The English Channel provides a number of logistical and tactical problems in that it is difficult to cross, in some weather, but also that the opposing army is given time to prepare.
<span>I think you mean this, "Shortly after the United States victory in the Spanish-American War, U.S. forces _____." According to researches that I've read, the answer to your question would be "U.S. forces </span>fought against an insurrection in the Philippines".
Christopher Columbus came to America (he did not find it.) with the boats Nina, Pinta, and the Santa Maria.
Stephen Crane's The Red Badge of Courage depicted the American Civil War from the point of view of an ordinary soldier. In England readers believed that the book was written by a veteran soldier, the text was so believable.
American Indians had their own culture and philosophy. This understanding of the world as widely misunderstood by European settlers, who always saw Native Americans as an obstacle, or even menace to their expansionary interests.
Indians quickly understood the European settlers interests and in many cases adopted a stiff opposition and conflictive attitude towards them. This would eventually lead to memorable incidents, such as the Wounded Knee Massacre, where the US army killed numerous Indians due to a misunderstanding that escalated into a fight.
There was a clear lack of understanding between both parts and both of them have a degree of responsibility for it.