Who became a national hero when he successfully laid a telegraph cable across the Atlantic Ocean, allowing North America and Europe to better communicate? Alexander Graham Bell
Samuel Morse
Cyrus Field
Thomas Edison

Samuel Morse

Indeed, Samuel Morse studied the problem in 1842, two years before he sent his famous message from Washington to Baltimore, when he laid an insulated copper wire across New York harbor and transmitted an electric current through it.

monasticism. people often do monasticism in monasteries

silk

indigo  

rice

all the other answers are wrong