Thanksgiving, a joyous national holiday, is celebrated in several countries, including the United States, Canada, Grenada, Saint Lucia, Liberia, and unofficially in places like Brazil and the Philippines. Additionally, it is observed in the charming Dutch town of Leiden and the beautiful Australian territory of Norfolk Island.  Originally, Thanksgiving was a special day dedicated to expressing gratitude for the bountiful harvest and the blessings of the preceding year. (Similar harvest festival holidays are also celebrated worldwide during autumn, notably in Germany and Japan.) In C...