Final answer:
Steam was the power source that changed transportation during the Industrial Revolution, fueling trains and steamships and revolutionizing the way people and goods were transported.
Step-by-step explanation:
The power source that changed transportation during the Industrial Revolution was steam. Steam engines fueled by burning coal were used to power trains and steamships, revolutionizing transportation during this time. The development of steam-powered engines allowed for faster and more efficient transportation of goods and people, leading to significant advancements in industrialization and globalization.