Distinguish between manmade and natural structures from the following:
Statue of Liberty
Suez canal
Niagara Falls
Vatical City
Valley of Death
Himalayas
Angorwat Temple
Taj Mahal
River Rhine
The strait of Malacca
Brooklyn bridge

Manmade:
Brooklyn bridge
Taj Mahal
Vatical City
Angorwat Temple
Statue of Liberty
Suez canal

Natural structures:
Niagara Falls
Valley of Death
The strait of Malacca
River Rhine
Himalayas