Which part of the text mentions 1. different types of uniforms? 2. facts from history? 3. examples of modern business wear?

The text mentions:

1. Different types of uniforms: Not mentioned.
2. Facts from history: Not mentioned.
3. Examples of modern business wear: The text provides several examples of modern business wear, such as tennis shirts, cotton trousers (like khakis), sandals (with or without socks) for men, and tennis shirts and trousers for women. It also mentions jeans being acceptable in some organizations with a sports coat or shirt, and dress-down Fridays where employees may wear less formal clothes.