They helped to end slavery
The reasons for the demise of the Mycenaean civilization, which occurred in stages from c. 1230 BCE to c. 1100 BCE, are debated. We do know that several sites were destroyed between 1250 and 1200 BCE, ushering in the so-called Post-Palatial period when the centralised system of palace control declined.
D- summary
Generally, in a conclusion, you always want to summarize your essay.
Bill Clinton. He said he hoped agreement would encourage other nations to work toward a broader world-trade pact. Hope this helps :)