What happened on April 28 1986?

What did they use to build them? What is the Greek God Athena's symbol? What happened in Berlin in April of 1945? Germany and Poland share natural resources? How does Thomas Edison contribute to your lives? What is Matthew Flinders named after? Who ratified the Constitution last Rhode Island or delware? Lafayette was wounded at what battle in 1777? How much do the US athletes get paid for winning gold medals? How long to travel from myrtle beach to Antietam battle field? What is the phone number of the Greenburgh Public Library in Elmsford? What colour hair did William of Normandy have? Which action of Theodore Roosevelt had the most negative reaction? How European partitioning in the middle east following World War 1 led to regional conflict? What vitamin is Thiamine? How did Assam responded to the civil disobedience movement? Are tariffs used today? Are courts and judges part of the judicial or executive branch? How did the British blockade of Germany actually bring the neutral Americans closer to the allies? A naval battle between the U.S. and Japan this weakened the Japanese threat in the Pacific Ocean in 1942?