What contribution did Samuel Morse make to the US?

What is the size of land of the US? Why did the US Congress pass a series of Neutrality Acts during the depression? What year did they make the most pennies? What is a 1945 silver dime worth from the US? Which authors novel recounts his grandmothers tales of the Black Hills and other places where the Kiowa people once lived? What was Amelia Earhart's mothers name? How do you tell where a silver dollar was made? What did the slave do in the the north? The Egyptians came up with a value of Pi based on their formula for what geometric shape? What is the value of a 1776-1976 Liberty Eisenhower Silver dollar? What is the value of an 1890-0 silver dollar? What best describes the opportunities that became available through the completion of the Transcontinental Railroad? What is the value of a 2007 Jamestown quadricentennial coin? What is the value of a 1934 US 1000 dollar federal reserve note? What is the rarest 1957 silver certificate? What is the 1909 vdb coin worth? What year did Wells Fargo open their doors? What is the value of an 1867 Indian head penny? What was the impact of the Morse code on American history? What allowed slavery above the 36 30' latitude?