Which North African country was once known as Numidia and has a rich history influenced by Berber, Roman, and Arab cultures?

1. Its capital city is located on the Mediterranean coast and was once called Icosium.
2. It is the largest country by land area in Africa.
3. It was a major battleground during the North African campaign of World War II.
4. A significant portion of its population speaks a dialect of Arabic known as Darija.