This is the 648th most frequent Turkish word.
i̇sveç
Sweden.
The word 'İsveç' is used as a proper noun to denote the country of Sweden.
İsveç, Kuzey Avrupa'da bir ülkedir.
Sweden is a country in Northern Europe.
Here, 'İsveç' is an adjective-like proper noun qualifying 'krallarının' to specify which kings are being referred to, those associated with Sweden.
İsveç krallarının tarihi oldukça ilginçtir.
The history of Swedish kings is quite interesting.
In this sentence, 'İsveç'ten' indicates origin, combining 'İsveç' with the ablative suffix '-ten' to denote someone coming from Sweden.