It led to a significant decrease in slavery and the slave trade
People started making and using tools. These tools enabled them to start the agricultural revolution and settle around river valleys. Now, they could just live at a single place instead of running around searching for food. They could grow their own food, and still go and hunt when necessary.
The most significant effect of Marbury v. Madison was that it established the principle known as judicial revue.
The provincial congresses took legislative actions on the part of the 13 colonies.
