Which of these was invented in the second industrial revolution? telephone steel telegraph steamboat?

The correct answer is the Telephone and new uses of steel.

Explanation:

The Telegraph and steamboat were invented during the First Industrial Revolution between the mid-18th century to about 1830, The second Industrial Revolution lasted from the mid-19th century until the early 20th century.

to protect the united states' role as a world leader, president truman wanted to prevent the soviet union from spreading communism beyond its post-world war ii boundaries. he declared that the united states must assist any nations struggling to prevent a communist takeover.

answer; /// slavery should be outlawed in the new country, was part of the initial draft of the declaration of independence, but not part of the final