Why was traveling on an established trail easier than creating a new one?

because usually people had an easier time going on estalished trail like the silk road it was dangerous but they used it up until the 15th century and it takes longer to make a new trail

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.

a stronger central government  

its what they are