Where does greenland join? be specific.

For the answer to the question above, It's the large island north of North America. Well, it's not an island at the time,  Greenland was once part of North America and Eurasia. 

i really hope this helps

Greenland is part of North America, along with its little islands.

In the midwest because it has more moderate climate than the north or south west which makes farming far easier.