Samsung is from South Korea. It's South Korish.
wrong (Samsung is from Korea. It's South Korean)
Huawei is from China. It's Chinese.
right.
This family's from Italy. They're Italic.
wrong (This family is from Italy. They're Italian)
Antonio Banderas is from Spain. He's Spanish.
right
Shakira's from Colombia. She's Colombine.
wrong (Shakira's from Colombia. She's Colombian)
You're from Brazil. You're Brazilian.
right
Sony is from Japan. It's Japanian.
wrong (Sony's from Japan. It's Japanese)
Renault is from France. It's French.
right
Volkswagen is from Germany. It's German.
right
She's from Argentina. She's Argelian.
wrong (She's from Argentina. She's Argentinian)
Adele's from England. She's English.
right
She's from Australia. She's Australian.
right.
He's from Austria. He's Australian.
wrong (He's from Austria. He's Austrian)
They're from Paraguay. They're Paraguish.
wrong (They're from Paraguay. They're Paraguayan)
These dolls are from Russia. They're Russian.
right
They're from the US. They are English.
wrong. (They're from the US. They're American)