Вставьте вместо пропусков подходящие по смыслу слова
1. The oldest ____ in the US are, of course, Indian.
2. The Europeans who arrived in America ____ many of the mountains lakes and rivers.
3. They found the Indian names very ____ to pronounce.
4. But even in their changed form, ____ and poetic sound of these Indian name remains: Niagara, Chicago, etc.
place-names
renamed
difficult
unusual