What allowed currency in the ancient world to work as a tool for the exchange of goods?

It represented an agreed-upon value

Explanation:

People were able to agree a value on a certain coin, which helped people from different parts trade with each other due to their understanding. In addition, people didn't have to barter with specific people who needed that specific product which wasn't productive and could be hard for some people who didn't produce products constantly needed. It proved to be extremely useful and productive, it's one of the reasons why civilizations were able to develop and have effective and efficient trade within their civilization and with other civilization.

racism and segregation.

the assassination of president lincoln was just one part of a larger plot to decapitate the federal government of the u.s. after the civil war. the first reaction to lincoln’s death was disbelief. then it quickly changed to grief. abraham lincoln’s death created an outpouring of grief from citizens in both the north and the south.

explanation:

lincoln was the first u.s. president to be assassinated. president abraham lincoln, america’s civil war leader, was assassinated just five days after confederate general robert e. lee surrendered his army at appomattox court house, ending the four-year war between the states. on the evening of april 14, 1865, lincoln was attending a performance of our american cousin at ford’s theatre in washington, d.c. john wilkes booth – a 26-year old actor, confederate sympathizer, and white supremacist – slipped into the presidential box and shot lincoln in the head. john wilkes booth and his conspirators had initially planned to kidnap lincoln to save the confederate states. but as the confederacy faltered, booth’s thoughts turned to murder. booth may have decided to act on his hatred after lincoln endorsed giving the right to vote to african-american men who had served in the union army.