1) The FIFA World Cup is the most-watched sporting event globally, with billions of viewers tuning in for the tournament held every four years.

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

3) In response to the global push for sustainability, many countries have set ambitious goals for transitioning to renewable energy sources, such as the aim to achieve carbon neutrality or significant reductions in greenhouse gas emissions by specific target years.

4) The Giza Pyramid Complex, situated on the outskirts of Cairo, Egypt, is home to the iconic Great Pyramid of Giza, one of the Seven Wonders of the Ancient World. It was built as a tomb for the pharaohs and represents the pinnacle of ancient Egyptian architecture and engineering.