South Carolina is boarded to the east of the Atlantic Ocean
It is impossible to build a drainage system on the outside of the Sao Francisco river as buildings are built on the outside of the foundation.
The Subarnarekha is developing a small drainage system.
The Amazon basin is the largest drainage basin in the world.
The Urugay drainage system includes the greater part of southeastern Brazil, Paraguay, southeastern Bolivia and northern Argentina
So i would suggest putting the Amazon as it is the most common known and largest. Remember to use geographical terms!
The answer is - reverse.
Reverse faults appear on places where there are ocean-continental and continental-continental convergent boundaries, and they are the total opposite of what the normal faults represent. If the hanging wall rises relative to the footwall, than we have reverse fault. This type of faults occur on places that are undergoing a compression/squishing.
