Which three geographical regions developed in the 1800s?

In the 1800s, three significant geographical regions that developed were the American West, the Canadian Prairies, and parts of Australia. The American West saw extensive settlement and expansion due to the Gold Rush and the Homestead Act, promoting agriculture and mining. The Canadian Prairies became a major agricultural hub with the arrival of settlers and the establishment of the railway system. Meanwhile, Australia experienced significant growth from British colonization, leading to the establishment of new settlements and the exploitation of Natural Resources.