Simplify the following text for a Grade 6 native English-speaking person.
Original: Carl August Steinheil in Munich was able to build a telegraph network within the city in 1835-6 , and installed a telegraph line along the first German railroad in 1835 .
Simplified: Carl August Steinheil was able to build a telegraph network in 1835-6 . He installed a telegraph line along the first German railroad in 1835 .