Final answer:
Volume fluctuations in trade due to changing economic conditions and transportation challenges were frequent in history. In earlier times, trading was subject to great risk and transport of goods and raw materials was difficult. However, trade volume grew significantly after World War II.
Step-by-step explanation:
Volume fluctuations in trade due to changing economic conditions and transportation challenges were frequent throughout history. In earlier times, trading was subject to great risk and transport of goods and raw materials was difficult. For example, during the thirteenth century, travel was expensive, and people often had to walk for long hours in poor weather conditions, facing perils such as illness and banditry. However, with advancements in transportation and the establishment of trade networks, trade volume grew significantly after World War II.