Yes Dual Citizenship is allowed for US citizens.
Spain does not have dual citizenship agreement with the US.
Yes it is allowed. If you obtain Canadian citizenship, you are allowed to maintain your American citizenship as well. But you should always carry both their passports when traveling between the two.
majority
Yes you can. the UK and the US both allow multiple citizenship
The benefits of citizenship includes having rights and protection from the country of citizenship. In the US for example, citizens can re-enter the country multiple times.
No.
LOL: No US Citizenship is required. However a few people per year are allowed to earn citizenship via service but those numbers are limited.
Yes if you can get citizenship for that child in your home country.
The benefits of citizenship includes having rights and protection from the country of citizenship. In the US for example, citizens can re-enter the country multiple times.
A person with an expired visa must apply for a new visa prior to applying for US citizenship. You can't apply when you have an expired visa.
Yes, a US citizen can pledge allegiance to another country when applying for dual citizenship, but this may have implications for their US citizenship status. The United States generally allows dual citizenship, but individuals must be aware that pledging allegiance to another country might be viewed as an act of renunciation of US citizenship. It's important to consult the laws of both countries involved to understand the potential consequences.
If you apply for citizenship in another country your US citizenship is automatically revoked. The US does not recognize dual citizenship. You revoke it in writing at a US embassy, outside the US.