"Our mother comes from the Czech Republic."
Translation:Nia patrino venas el Ĉeĥio.
The two acceptable answers it show me were:
• Nia patrino venas el la Ĉeĥa respubliko. • Nia patrino venas el Ĉeĥio.
In the second, it follows the format I'm familiar with, ending in a "o" because it is a noun. In the first, the word ends in an "a". So then, is Ĉeĥa an adjective? The "Czech" in "Czech Republic" is an adjective? By that reasoning isn't also the "United" in "United States of America" an adjective? I had previously assumed, somehow, that it was a proper noun, since it was a part of a name.