Descriptive investigations involve collecting data about a system, but not making tests or experiments.
Making tests belongs to experimental investigations.
Descriptive investigations aim to draw conclusions from observations of the fenomena, while experimental investigations design tests that let the researcher to compare results on different conditions with a control situation.
There is also the so called comparative investigations which collect data from under different conditions but do not include the control situtation.
A.The Roman empire relied on physical features as natural barriers.
I don't know try looking it up
The First Bank of the United States was set up in 1791. It was proposed by Alexander Hamilton, and approved with a 20-year charter till 1811.
Because the colonists had no say whether or not they were taxed. Hope this helps!
