1) Leonardo DiCaprio is an acclaimed American actor and environmental activist. He has starred in numerous successful films, including "Titanic," "The Revenant," and "The Wolf of Wall Street," and has been recognized with several awards, including an Academy Award.

2) The Mongol Empire, under the leadership of Genghis Khan, became the largest contiguous empire in history, spanning from Asia to Europe.

3) The rapid development and adoption of cryptocurrencies, such as Bitcoin and Ethereum, have sparked discussions on the future of finance, decentralization, and the potential of blockchain technology to disrupt traditional financial systems.

4) The International Cricket Council (ICC) is the governing body for the sport of cricket and oversees international tournaments and rankings.