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3 votes
In which of the following pairs was the second development dependent on the first development? A invention of internal combustion engine; English railroad boom B introduction of assembly line; invention of automobile C invention of dynamo; sending of first telegraph message

2 Answers

2 votes
C the invention of dynama; sending or first telegraph message
User Saumyaraj
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5 votes
Invention of the dynamo sending of first telegraph message
100% sure
User Rubdottocom
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