What is the most significant limitation that carl schurz’s work has, as a resource for a historian?

He wrote his account about fifty years after the events occurred.

What is the most significant limitation that Carl Schurz’s work has, as a resource for a historian?  

He was not an eyewitness to the events he describes.  

He was too young to be a reliable witness.  

He was an employee of the government and likely biased against the revolutionaries.  

He wrote his account about fifty years after the events occurred.

D.He wrote his account about fifty years after the events occurred.

the group i'm selecting: greeks.

a first group of greek immigrants came to the us in the 1850s. the second group came to america starting in the 1890s due to economic opportunities they didn't have back in their home caused by the hardships of ottoman rule. greek immigration was 90% male, many of them expected to work and return to greece after earning enough capital, but ultimately had to remain in the us after the greek genocide.

idk

explanation: