Earth is going around right now so its no flat at all lol
The factor that helped the United States in making the inland transportation and commerce to be possible is in letter C. The intricate river system. I hope you are satisfied with my answer and feel free to ask for more if you have clarifications and questions.
Hello!
answer:
1. Columbia
2. Venezuela
3. Peru
4. Brazil
5. Chile
6. Argentina
i hope this helps you!
C, the separation of Church and State
