There would be no seasons as it is the tilt of the earths axis that causes the varying amounts of sunlight and temperatures. there would, however be some variation in temperature as the earths orbit is elliptical and so there would still be times of being closer to or further away from the sun.
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.
Answer:
option b or c I don't know
Theocracy. Theocracy, government by divine guidance or by officials who are regarded as divinely guided. In many theocracies, government leaders are members of the clergy, and the state's legal system is based on religious law.
Because, if there's no summer the seasons won't be completed.