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How to avoid using a number or enum when implementing business logic
Country country = null;
Region region = null;
City city = null;

int level;

if (!IsCityInfoAvailable())
{
    // we have to make a new country, region and city
    level = 3;
}
else if (!IsRegionInfoAvailable())
{
    // we have to make a new country and region
    level = 2;
}
else if (!IsCountryRegionAvailable())
{
    // we have to make a new country
    level = 1;
}
else
{
    // we have all the info we need
    level = 0;
}

IDataEntryTarget target;

if (level > 0)
{
    country = new Country(Project, "Unnamed Country");
    target = country;
}
if (level > 1)
{
    region = new Region(country, "Unnamed Region", Region.DefaultRegionSettings);
    target = region;
}
if (level > 2)
{
    city = new City(region, "Unnamed City", 0);
    target = city;
}

// ... proceed with data entry code using `target`...

Func<Country> GetCountry = () => country ?? (country = new Country(Project, "Unnamed Country"));
Func<Region> GetRegion = () => region ?? (region = new Region(GetCountry(), "Unnamed Region", Region.DefaultRegionSettings));
Func<City> GetCity = () => city ?? (city = new City(GetRegion(), "Unnamed City", 0));

IDataEntryTarget target = null;

if (!IsCityInfoAvailable())
{
    // we have to make a new country, region and city
     target = GetCity();
}
else if (!IsRegionInfoAvailable())
{
    // we have to make a new country and region
    target = GetRegion();
}
else if (!IsCountryRegionAvailable())
{
    // we have to make a new country
    target = GetCountry();
}