What is the principle of intervention

How did the completion of the transcontinental railroad change the lives of american citizens? a-it increased the wealth of all americans and enabled them to travel more.b-it made cross-country travel too expensive for ordinary americans.c-it decreased the safety of americans who moved to settle the plains.d-it shortened travel time between the east and west for all americans.

Which scenario is not an example of one of the primary motivations for bias in media coverage

Yall i need which of the following became known as the “sick man of europe” in the 1800s? a. berlin conference b. king leopold ii c. mughal empire d. ottoman empire e. british east india company