Most workers for the central pacific railroad were
irish
french
german
chinese

The correct answer is: "Chinese".

The Central Pacific Railroad connected California and Utah since the 1860s decade. It was constructed as the Western branch of the "First Transcontinental Railroad" located in North America.

Chinese immigrants were a crucial labor source during the construction of the railroad. More and more Chinese men continued arriving and were hired even tough the working conditions were extremely harsh and they received less compensation that their white counterparts.  

the answer that best explains what happened to george washington at fort necessity, pennsylvania is : washington was attacked by the french but was able to negotiate with them to peacefully end fighting. the battle took place on july 3, 1754. the battle is considered as being the start of the french and indian war.

it was bribing i think i might be wrong though