Some historians refer to the increase in highways and roads in the u. s during the 19th century as a "transportation revolution."how did the addition of many more roads and hight ways affect u. s.?

d will be ur answer

to mark sum 1 brainliest there has to be 2 answer at least

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.