What is the question you are asking?
Answer:
This photograph shows the Orion Nebula, an interstellar cloud in which star systems - and possibly planets - are forming. Our own solar system presumably formed as gravity caused the collapse of a similar large cloud of gas. The piece of cloud that formed our Solar System is known as the solar nebula.
Explanation:
This number would greatly increase, as there are many nations that don't have their own their own country. Some are part of a bigger country (the Tamils in India) and some are distributed among many countries (the Kurds)
Recognizing all those nations could increase some conflicts, such as that between the Kurds and Turkish in Turkey.
I think that a good definition should acknowledge that some nations have independent states and some are part of another state - the defining characteristics should be a sense of unity among the nation.