You can't "start" a country. There are many de facto States that would like the status of a country but that are not recognized by most of the rest of the world as such. Tawain is a good example which can sometimes provoke angry responses.  A lot of modern countries were started in the last century by way of liberation from their colonizers, mostly in Africa and Asia. If you could find a colonized country somewhere and liberate it and at the same time become its government, then perhaps you would be "starting" a country. Some people have tried to buy land and create their own laws such that rich business men can keep getting richer and richer and richer and the rest of the world can only stop them by declaring war on their "country," but I think that is one of those "we're going to build the tallest building ever" ideas.