While the Indian Removal Act of 1830 laid the foundation for Indigenous genocide, there were many subsequent conflicts between Indigenous Peoples trying to defend themselves and the US Military. The Dakota War of 1862 is an example where the Dakota nation (also known as Sioux) were forced into desperation by the unjust treaty violations by the US government leading to the Dakota not having enough food and going hungry. They responded by attacking settlers in the area, killing some and driving many away. This ultimately led to the largest mass execution in US history where 38 Dakota men were publicly hanged in Mankato, Minnesota.
I include this event because it was only about 30 years prior to the arrival of Ole Madland to the exact same land that was stolen from the Dakota. As far as I can tell, Ole did not stay in this area for long and did not own any land.