The physical obstacles to building a network of roads, canals, and railroads

1. employing a skilled labor force

2. market saturation, economic feasibility

3. obtaining raw material and detonation

4. hiring expertise and consultants

5. acquiring funds and meeting deadlines

6. lobbying for beneficial laws and regulations

7. handling safety procedures and permissions

8. finding a crew for timely maintenance

9. designing for a cost effective lifespan

10. identifying areas of populations to connect