The immediate causes of the Hundred Years War were the dissatisfaction of Edward III of England with the nonfulfillment by Philip VI of France of his pledges to restore a part of Guienne taken by Charles IV. so, in a way Edward lll did qualify as a trigger in the war.
Lusitania was an important event in World War I. The death of so many innocent civilians at the hands of the Germans galvanized American support for entering the war, which eventually turned the tide in favor of the Allies. The Lusitania was a British luxury cruise ship.
Answer:
A civil war between neighboring tribes
Two of the most common problems that many European colonists faced were 1) a lack of food due mostly to improper knowledge of farming, and 2) hostile native populations.
