How did the United States acquire the land that became Kansas and Nebraska?

The land was acquired in the Kansas-Nebraska Act. The US purchased the land from Mexico.

Explanation:

First, the federal government had promised this territory to American Indians. Secondly, this territory was part of the Louisiana Purchase Territory. Under the Missouri Compromise of 1820, the land that would become the Kansas and Nebraska territories had to be "free states" where slavery wouldn't be permitted

well this is going to be a long answer lol ok so the visigoths were a branch of the goths who frequently raided rome, uh the hunas attacked the guptas a lot and weakened them, uuhm of course the romans used math and science in there every day lives i mean they had a whole empire to run, and rome was split into east and west by a general named diocletian. hope this you! : )