Abraham Lincoln's "Gettysburg Address" (1863) and Martin Luther King, Jr.'s "I Have a Dream" Speech (1963) were separated by 100 years. How were the two similar? help please

This is what i found on google “the first mobile phone call was made 40 years ago today. on april 3, 1973, motorola employee martin cooper stood in midtown manhattan and placed a call to the headquarters of bell labs in new jersey.” i hope this you for what your looking.

They showed the country that integration could be successful.