New scientific knowledge help the building of the Panama canal because there was a decrease of workers getting sick of malaria and yellow fever. It was Colonel Gorgas, the Chief Medical Officer, who have read about discoveries linking mosquitoes and malaria. Due to these readings, he succeed in eradicating the cause of the disease therefore a decrease in people getting sick.
The famous Wade-Davis bill opposed the "10 percent plan" of Lincon. The Wade–Davis Bill (1864) was proposed to reconstruct the South. In contrast to the Ten Percent Plan, the bill ensured the re-admittance to Union on majority in every Southern state for taking the oath.
