Answer: (A) The Little Ice Age caused shortages of food and reduced the amount of agricultural surplus available for trade.
Step-by-step explanation:
Whilst the graph is not available, the most likely answer is option A.
The Little Ice Age was a period between the early 14th century and mid 19th century that was so cold that rivers such as the Baltic froze and winters were particularly longer than before.
This led to the planting season being so shortened that there were food shortages and countries were unable to sell much produce as surplus because they needed it themselves.