One event was The 1998 Winter Olympics; they were held in Nagano, Japan in February. Another important event was the vote by the US House of Representatives to impeach President Bill Clinton, which occurred in December.
The emperor.
The Iraq War.
The 1848 discovery of gold.
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The Holocaust
There are many historical events, but the one that stands out the most is the signing of the Declaration of Independence.
The Taj Mahal is most definetly a historical event
The black plague
An event's historical context is the social or political setting in which it occurred.
Nuclear attack to japan
No one knows yet but its in japan.