Research topics usually consist of several smaller issues or questions that you need to research in order to draw conclusions about the larger topic.
For the group presentation, you've been given the topic:
"The impact of the 1980 federal motor carrier act on the Transportation industry and the resulting impact on supply chain decision making"
You should not expect to simply Google this topic and find an answer. There are several smaller issues that you will need to learn about in order to draw your own conclusions for your presentation. Try to break down this topic into smaller issues that you can research.