On this day in History - June 15

763 BC – Assyrians record a solar eclipse that is later used to fix the chronology of Mesopotamian history.

1804 – New Hampshire approves the Twelfth Amendment to the United States Constitution, ratifying the document.

1859 – Ambiguity in the Oregon Treaty leads to the "Northwestern Boundary Dispute" between American and British/Canadian settlers.

1977 – After the death of dictator Francisco Franco in 1975, the first democratic elections take place in Spain.

1996 – The Troubles: The Provisional Irish Republican Army (IRA) detonates a powerful truck bomb in the middle of Manchester, England, devastating the city centre and injuring 200 people.