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