1) The avocado, native to Central and South America, is a versatile fruit known for its creamy texture and nutritional benefits. Avocados are rich in healthy fats, fiber, and vitamins, making them a popular ingredient in salads, sandwiches, guacamole, and smoothies. They have gained significant popularity in recent years, becoming a staple in healthy eating and plant-based diets.

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 first bank in the world, Banca Monte dei Paschi di Siena, was established in Italy in 1472 and is still in operation today.

4) The concept of proportional representation, used in some electoral systems, aims to ensure that political parties' representation in government aligns more closely with the proportion of votes they receive from the electorate.