Since you did not specify the directions of the latitude and longitude lines, the best assumption would be 15 degrees north latitude and 100 degrees east longitude. However, there is no capital city located there, and none at the other combinations. It is actually Chainat province in Thailand.
The city located at 95 degrees west longitude and 30 degrees north latitude is Austin, the capital of Texas.
Canberra, the capital city of Australia, is located at approximately 35 degrees south latitude and 150 degrees east longitude.
The city located at 15 degrees latitude and 129 degrees longitude is Manila, the capital city of the Philippines.
Whitehorse
The city located at 6 degrees south latitude and 106 degrees west longitude is Lima, the capital of Peru.
Tripoli, capital city of Libya.
The largest community, Honolulu, is the state capital. The image is located at 21.5 degrees north latitude and 158 degrees west longitude.
The city located at 9 degrees north latitude and 39 degrees east longitude is Addis Ababa, the capital of Ethiopia.
The city located at 56 degrees north latitude and 12 degrees east longitude is Copenhagen, the capital of Denmark.
Jakarta, Indonesia.
Muscat, Oman.
Brasilia, Brazil.