Currently, Cambodia has an open market economy and it's per capita income has been rapidly increasing agriculture is the mainstay of the Cambodian economy about 80 % of the workforce is engaged in the agricultural business, major crops are maize, groundnuts, and soybeans, and the rubber is an important export item.
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.
