Check all that apply.
What two companies began building railroads that would join to complete a transcontinental route?
Central Pacific Railroad
Western Pacific Railroad
Union Pacific Railroad
Northern Pacific Railroad
Eastern Pacific Railroad
Central Pacific Railroad
Union Pacific Railroad
The two companies that began building railroads that would join to complete a transcontinental route are:
1. Central Pacific Railroad
2. Union Pacific Railroad
To determine which two companies began building railroads that would join to complete a transcontinental route, we can eliminate the options that are not relevant to the question by checking historical records or using an appropriate search engine.
1. Central Pacific Railroad: This company did participate in the construction of the transcontinental railroad.
2. Western Pacific Railroad: While the Western Pacific Railroad did exist, it was not directly involved in the construction of the transcontinental railroad and can be eliminated.
3. Union Pacific Railroad: This company did participate in the construction of the transcontinental railroad.
4. Northern Pacific Railroad: Even though the Northern Pacific Railroad was established around the same time as the transcontinental railroad was being built, it was not one of the companies directly involved in its construction and can be eliminated.
5. Eastern Pacific Railroad: This option is incorrect as there is no historical reference to an "Eastern Pacific Railroad" participating in the construction of the transcontinental railroad.
Based on this information, the two companies that began building railroads that would join to complete a transcontinental route are the Central Pacific Railroad and the Union Pacific Railroad.