These indexes reflect how land acquired by your colonists is developed. As such, increasing one lowers the others. Different development or zone types are also increased when you build structures yourself, which adds the land and development they require. Local laws offer a redevelopment option to adjust indexes at colonies that see little land growth.

Urbanization turns your rural colony into a city or even a metropolis. As people prefer population centers for better access to jobs and services, urban centers will attract more immigrants. With an increased density, there is less need for your people to acquire more land.

However, if a colony's density becomes too high, people may become unhappy.

High tech industry and research centers will draw many scientists to your colony, and afford your people better education and training. It also impacts the duration of your research projects.

With more heavy industry, your mines' efficiency increases, and ship construction costs are lowered. However, there is a negative impact on health and happiness.

The military development at your colony has a large impact on ship construction speed, and a small one on mining output. High military development lowers happiness.