Why might Andrew Johnson’s conviction and removal have weakened the office of president?

At the end of a historic two-month trial, the U.S. Senate narrowly fails to convict President Andrew Johnson of the impeachment charges levied against him by the House of Representatives three months earlier. The senators voted 35 guilty and 19 not guilty on the second article of impeachment, a charge related to his violation of the Tenure of Office Act in the previous year. Ten days earlier, the Senate had likewise failed to convict Johnson on another article of impeachment, the 11th, voting an identical 35 for conviction and 19 for acquittal. Because both votes fell short–by one vote–of the two-thirds majority needed to convict Johnson, he was judged not guilty and remained in office.

before there were tanks, machine guns, windmills, and solar panels, the first civilizations emerged that create the history of humanity which provided the larger context for western civilization. uses of weaponry and technology were used very differently in the ancient civilizations than they are today. relating back to the times of the ancient mesopotamian civilization, technology kept advancing throughout the ancient egyptian civilization into the ancient greek civilization, and then finally the ancient roman civilization. as techniques and strategies were past down from civilization to civilization, each shared its own similarities, as well as varied differences. one trait they had in common was to commit violence and economically overpower one another. technology has ultimately advanced due to the knowledge transferred from generation to generation. uses of sophisticated weaponry and devices have created more opportunity for warfare and improvement in the work place. ancient civilizations became more powerful due to the advancements of technology. technology did not only create the use of violence, but it also the economies grow and become stronger, because production of trading goods rose like never before. the rivers, such as the nile, tigris, and euphrates all flourished, as well as destructed civilizations. each civilization had different uses for these rivers, however, some benefited more than others. when analyzing ancient civilizations, there   are things you must understand

explanation:

the answer is c, all the other options are things they are known for.

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