Canada does not allow Dual Citizenship solely based on bilateral agreements (like the way Spain does with Spanish South American countries, Philippines, and Portugal). Therefore, if you become a Canadian citizen and you are from a country that does not allow dual citizenship, you may lose your original nationality because of the laws of that country, not Canada.
Yes, Portugal and Canada both allow multiple citizenship.
Yes, it is possible to have dual citizenship in both Canada and the UK.
Yes, Thailand allows dual citizenship.
India does not allow dual citizenship.
Yes, Poland allows dual citizenship.
Yes, Venezuela allows dual citizenship.
Dual citizenship has been allowed in Brazil since 1994.
No, it's South Korea that does not allow dual citizenship.
Yes, it does.
Yes, Uruguay allows dual citizenship, meaning individuals can hold citizenship in Uruguay and another country simultaneously.
Israel allows dual citizenship for those who immigrate to Israel based on Law of Return (aliyah): you have to be Jewish to qualify to hold dual citizenship in Israel.
Liberia