Which of the following was an unintentional consequence of railroads in the urban environment?

Is there an picture? If you comment on this and edit it I'll answer it dude.

a

explanation:

just took the test

martin luther king (1929-1968) was an activist for the african american rights, mr. king has a profile of a kind leader that built a tenacity, respect and full of hope future. he was an activist through civil disobedience and no violence pressure mechanisms. he tried to build a more egalitarian and fair society. his efforts carried a reivindication message of the civilian rights to every west corners. for that reason, he won the nobel prize in 1964.