Europeans wanted exploration in the 15th and 16th centuries for the belief that there was emense wealth in undiscovered countries. For example, king Ferdinand and queen Isabella of Spain sent Christopher Columbus on an exploration to find gold or other precious metals. When he landed in America, he didn't find gold but he knew he'd be punished for returning empty handed so came up with the idea to enslave indigineous people as an alternative form of wealth
The reasons art these:
1. they created a structured system of state and federal courts.
2. made available the basic means of collecting taxes and producing money.
3. they find solutions to the boundary disputes with Great Britain and Spain.
4. they created a structured way for settling and ruling the western territories.
The main concern was taxation without representation, and individual rights.