Sovereign city

== Chronology==

Sovereign city was founded in 4537BCE, however the planet had been an Ecumenopolis for at least two thousand years prior.

Keria, the planet’s original name had been suffering from overpopulation and pollution for nearly a millennium before 7000 BCE, at the time Keria’s already massive cities began to grow at an exponential rate, by the 7120s the cities, or Megalopolises had consumed the entirety of Keria’s habitable land area, the adverse effect of this industrialization was an increase in pollution, causing an exponential increase in green house gasses, warming the planet and killing many species. The planet’s population continued to increase, eventually the entirety of the planets land surface had been incorporated into a city, most of the remaining land species were forced into extinction after being displaced form there native territories. Pollution which was normally removed by the now extinct plant species began to build up in the planet’s atmosphere, causing mass extinction in the once majestic oceans, which then caused an even larger build up of pollution, creating a feedback loop that continued until all species had become extinct. The planets population attempted to stop the destruction of the environment but lacked the technology and resources. They were still suffering from overpopulation, and they decided to drain the lifeless and polluted oceans to reclaim land, in little over a century they had lowered the ocean by three percent, and had colonized all of the new land, they the lowered the sea level again, this time removing a sixth of the ocean’s water, over the next six hundred the Kerians drained the entirety of the oceans along with all the reaming water on the planet, and quickly absorbed the new land into their great city.

Keria’s transformation from a Class M planet to a Ecumenopolis took approximately eight hundred years, the process started in the 7000s and ending in the 7850s BCE.

==Composition and Structure==

===Composition===

===Internal Structure===

====Core====

====Mantle====

===Surface===

The planet’s entire surface has been xenoformed into one gigantic city, as a result, most of the natural landforms have been long sense replaced with magnificent structures.

===Tectonic Plates===

Sovereign City is tectonically active, however seismic inhibitors and geothermal energy extractors have been designed to mitigate all tectonic activity,

===Atmosphere===

====Troposphere====

====Weather and Climate====

====Stratosphere====

====Mesosphere====

====Thermosphere====

====Exosphere====

===Magnetic Field===

==Orbit and Rotation==

===Axis tilt and seasons===

==Satellites==

Sovereign city has three moons, all three of which are Ecumenopolis like their parent, The largest of them is Celestial City, Neo Celesta City, and the smallest is Stellar City

===Celestial City===

===Neo Celesta City===

===Stellar City===

==Habitability==