Indefinite. This should be correct but let me know if I'm wrong
Explanation:
In "Letter by a Swiss-German Immigrant to Pennsylvania" America is the symbol for a free country. By this adjective "free" the author wants to explain how is America a place for living. Free means that everyone is welcome to come. The author creates a picture of America, where you can settle without asking everyone, where there is a wide landscape, spacious land "from Canada to the east of us to Carolina in the south and to the Spanish border in the west".
One of the most important detail is there is no payment for taxes to land, but in Europe, you must pay. Free country for author means there are no obligations for living there. He thinks that America is promised land.
Let is an closed syllable
