Based on the responses you have made, the most appropriate conclusion is:

Republic of Portugal

Location: Europe Status: UN Country Capital City: Lisbon (Lisboa) Main Cities: Oporto Population: 9,877,000 Area [sq.km]: 92,390 Currency: 1 euro = 100 cents Languages: Portuguese Religions: Roman Catholic

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This conclusion is based on the following expert system rule...

If stripes Vertical
and if does this Flag have an Emblem/Badge? Yes
and if does this flag have Black? No
and if does this flag have Green? Yes
and if does this flag have White? No
and if does this flag have Red? Yes
and if does this flag have Yellow? No
then the Country is Republic of Portugal.