The Wade- Davis Bill was introduced after the Civil War. The goal of this bill was to help the Confederate states rejoin the Union after meeting certain requirements.
In this case, the Wade- Davis Bill wanted a majority of the population within a respective southern state to take the Ironclad oath. This oath essentially says that these individuals never supported the Confederacy in the past. This oath was supposed to prove these citizens loyalty to the United States moving forward.
Even though this is passed in Congress, it is pocket vetoed by Lincoln and never gets implemented into US society.
The correct answer is the Influenza Pandemic.
This Influenza (flu) Pandemic killed between 20 and 100 million people (estimates differ) - more than the war itself!
The source of the Pandemic is still not known, and people suggest such places as the US, China and France.
Answer:
The expedition was unofficially initiated by the then President of Texas, Mirabeau B. Lamar, in an attempt to gain control over the lucrative Santa Fe Trail and with the ulterior motive to acquire parts of New Mexico for the Texas Republic.