Which of the following sets Ethiopia apart from other nations in northeastern Africa, such as Sudan and Egypt?

1. Ethiopia is one of the oldest independent countries in Africa and has never been colonized, unlike Sudan and Egypt which were both colonized by European powers.

2. Ethiopia has its own unique alphabet and language (Amharic), while Sudan and Egypt primarily use Arabic.

3. Ethiopia has a rich cultural heritage and is known for its ancient churches, rock-hewn churches, and unique religious traditions such as the Ethiopian Orthodox Tewahedo Church.

4. Ethiopia is the only country in Africa with its own calendar (the Ethiopian calendar has 13 months) and is home to the African Union headquarters.

5. Ethiopia has a unique cuisine, including dishes such as injera (a sourdough flatbread) and doro wat (spicy chicken stew), that sets it apart from the cuisines of Sudan and Egypt.