yes although it is in two continents
No, because Montenegro is not a member of the European Union.
Yes, as a Polish citizen, you can travel to Malta using your Polish ID card. Both Poland and Malta are part of the European Union, allowing EU citizens to enter other member states with just an ID card. Ensure your ID is valid for the duration of your stay, and check for any specific entry requirements that may be in place.
of course you can, Poland and United Kingdom are in European Union, so the passport is not necessary, polish ID or british ID is totally fine
EU VAT Number / ID
Only if you are British or Northern Irish, otherwise you need your EU ID card or the passport of your country.
Once you have obtained your European Union ID Card and the "Okay to Board" clearance, you can travel to any of the 27 EU member countries, including popular destinations like France, Germany, Italy, and Spain. Additionally, some non-EU countries, such as Norway, Iceland, and Switzerland, may also allow entry with an EU ID Card. However, it's important to check each country's specific entry requirements before traveling.
Citizens of the EU countries can use their national ID card instead of a passport only if the flight is between the two EU countries. However, you should consider the fact the UK has tougher rules and regulations for customs and immigration at the arrival ports. Therefore, you may face delays upon arrival.
No, you just need a national ID. Their both part of the EU.
idenafication card ( ID ) idenafication card ( ID )
No, you do not need a passport to travel within the European Union if you are a citizen of an EU member country. A valid national ID card is usually sufficient for travel within the EU.
Green card is enough as ID but its better to get a ID(either driver license or ID from MVA) to carry around as you do not want to carry around your green card just in case. Yes its good as ID