Answer:
A. determine which events caused later events to occur.
Answer:
were not used to physical labor.
Explanation:
the first men on Jamestown were not laborers, but businessmen.
Answer:
I'm pretty sure it's c or d
The statement that best explains why the transcontinental railrold took several years to build is digging through the mountains was very difficult, and the long winters hampered workers' ability to make progress. The foothills of Sierra Nevada, the winter snowtorms, shortage of reliable labor and increasing need for tunneling hampered the progress as they went higher in the mountains.