thelargest tsunamitaken place was in tiland
Japan
2004
It is not certain.
2009
600 miles per hour
on america
no it is not the largest.
It can take over month's for a Tsunami to recover from it's damage.
Earthquake
The Tsunami (and most Tsunamis) are caused by earthquakes that take place deep under the seabed. The greater the severity of the earthquake, the larger, and more devastating, a Tsunami will be.
Lituya Bay, Alaska in 1952 and was 1720 feet big.
The largest tsunami in the world and the US Happened in Liyuta bay, Alaska on July 9th, 1958.