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Please choose between these 2 systems

To be a planet with a government or to be countries with governments , armies that is the question . By making same government we can save a lot of money at armies , parallel space programs etc .

I think it is possible to use Magnetoplasmadynamic thruster for launching satellites instead of liquid or solid rockets ?! MPDT makes 200N thrust an array of for example 5 MPDTs can make 1kN thrust i guess it's enough for an small satellite and what is important is these engines can carry...