Unfortunately Spain does not allow dual citizenship. If you are a US citizen, you should give up your Spanish nationality otherwise you will face penalties.
Yes, it is possible for a US citizen to hold dual citizenship with another country.
Yes, a US citizen can hold dual citizenship, which means they are a citizen of the United States and another country at the same time.
If you are a citizen of Puerto Rico, you are a US Citizen.
Yes
Spain has dual citizenship agreement ONLY with Spanish countries of South America, Portugal and Philippines. Other countries have to renounce their citizenship if they can and then become a Spanish citizen- in your case the US allows you to renounce: so you must.
Yes, a US citizen can obtain dual citizenship, which means they can hold citizenship in the United States and another country at the same time.
she have to marry again in israeli
Yes, it is possible to have dual citizenship in the US. This means you can be a citizen of the US and another country at the same time.
Being already a Filipino citizen because of Dual Citizenship, You can stay as long as you like.
If it's a valid US passport or you are a dual-citizen most likely
yes