What impacts did climate change have on europe during the 14th century (1300s)?

Climate change in 14th century Europe brought on a tiny ice age. the crops failed, leading to starvation and famine. that in turn lead to the introduction of Bubonic plague from the far East.

If your answers look like this a) expansion through conquestb) development of a calendar c) development of a written language d) creation of a large road workthen the answer is dhope it