The correct answer is B: "The growth and development of European towns."
As a consequence of the Crusades and the initial need of shipping Christian Armies to the Middle East, long distance trade reappeared in Europe for the first time since the years of the Roman Empire. The exchange of goods between Europeans and Arabs also reintroduced the use of currency which in turn further facilitated and increased trade operations. In less than a couple of centuries, many European towns went from a subsistence economy (based on the production of the goods strictly needed in the community) to a mercantile economy in which cities produced vast amounts of wealth.
The area that has removes most restructions on the movement of people between countries in its location is known to be Europe. This was made possible thanks to the efforts of those who created the European Union.
<span>While parts (1) and (2) are accurate, parts (3) and (4) need revision. It is not a fact that soldiers used s</span><span>teel weapons for protection, neither did the farmers plow with steel plows. </span>
