1) The United States operates under a two-party system, with the Democratic Party and the Republican Party being the two major political parties that compete in elections and shape the country's political landscape.

2) The first modern Olympic marathon race was held at the 1896 Olympics in Athens and has since become one of the most iconic and challenging events in athletics.

3) The Yangtze River, also known as the Changjiang River, is the longest river in Asia and the third-longest in the world, stretching over 6,300 kilometers (3,915 miles). It holds immense cultural, historical, and ecological significance for China and the surrounding regions.

4) Tea, originating from China, is one of the most consumed beverages globally. It is made from the leaves of the Camellia sinensis plant and comes in various types, including green, black, oolong, and white tea. Each type undergoes different processing methods, resulting in distinct flavors and aromas. Tea culture has a rich history and is celebrated in rituals, ceremonies, and social gatherings in different cultures worldwide.