The aspect of fiction that realist writers use to advance the plot of their story would be : The complexity of the characters.
Realist writers tend to advanced the plot by somehow explaining the motives that influence each characters, creating a tension and plot based on our human understanding and empathy
D.: Congress established the Pendleton Service Act, after the assassination of President Garfield our 20th president.
The commission was created to administer the civil service of the United States federal government.
Spain colonized Cuba, and Portugal colonized Brazil.