The first Europeans to arrive in North America -- at least the first for whom there is solid evidence -- were Norse, traveling west from Greenland, where Erik the Red had founded a settlement around the year 985.
Explanation:
The first problem that the republic faced was the governing of the empire. (Yes, Rome was an empire under the republic) At the beginning, there was the problem of civil rights for the plebeians. Over the years the republic evolved into a "rich man's club" as one had to be wealthy or deeply in debt in order to get elected. A candidate had to put on a good show for the voters and this was expensive. Eventually the senate split into two groups, those who wanted change and those who wanted things the way they always had been. This was the downfall of the republic or the problem that they could not so
The Black Death killed 38 million people, it was a terrible illness which spread rapidly.
The Great Schism was in 1054 and the Christian church broke up into two sections, which essentially divided the Church with two popes.
I would say that trade would be "believed to travel to Europe because of this", because it would not really fit anywhere else.
Now, I'm not two sure on the last one but the Hundred Years War was where King Edward the III of England thought that he should be the king of France, so there was a very long battle between the two. I would say the Hundred Years War would be started by division of the heir to the throne of England, and France and Italy did not agree who was to be pope. Since the Hundred Years War had really nothing to do with Italy.
It was the Duke of Wellington who finally gave Nappy the kick in the behind he had deserved for so long. Cheers to the duke!
Woops thought it said native americans