How did 'one-house' legislature start in Nebraska?

Nebraska’s frugality during the Great Depression was a big factor since a one-house legislature drastically reduced administrative costs with fewer senators and committees. A Norris quote at the time clearly expressed his common-sense views and desire for more government efficiency: “The constitutions of our various states are built upon the idea that there is but one class,” he said. [...]that too could change as the number of rural senators continues to decline because of population trends.