Canals are man-made, meaning, they are Human Systems.
Faults are natural, meaning, they are <span>Physical Systems.
Floods are not created by man, meaning, they are </span>Physical Systems.
Bridges are man-made, meaning, they are Human Systems.
I hope this helps!
Answer:
Congress can create a postal system, Congress can declare war, and Congress can make treaties with foreign nations.
Explanation:
However, its inability to levy and collect taxes prevented it from doing many of these and its other jobs successfully (if you need me to elaborate say so).
The answer is domestic system
The Slave Trade is the industry that grew with slavery in the United States.