1) The name "Bluetooth" comes from the 10th-century Danish king, Harald Bluetooth, who united Denmark and Norway.

2) The world's oldest known recipe is for beer and is over 4,000 years old.

3) Wine is an alcoholic beverage made from fermented grapes or other fruits. It has a long history dating back thousands of years and is associated with cultural and social significance in many regions. Wine production involves various factors, including grape varieties, fermentation processes, and aging techniques, resulting in a wide array of flavors and styles. Red, white, and rosé wines are among the most common types, each offering distinct characteristics and pairing possibilities with different cuisines.

4) The Taj Mahal, located in Agra, India, is an iconic mausoleum recognized as a UNESCO World Heritage site. It was built in the 17th century by Emperor Shah Jahan as a testament to his love for his wife and stands as a masterpiece of Mughal architecture and a symbol of India's cultural heritage.