What did bill gate contribute?

creating one of the worlds most popular computer operating system and donating billions of dollars to charity out of his own generosity.

Bill is a shortened familiar version in English for William. Just a nickname. His actual name is William Henry Gates III.

His last name is Gates, because Gates is his family's name. His last name Gates comes from his ancestors.

For starting Microsoft Corporation, which produced Windows which is the operating system on more computers than any others. Microsoft? Being the founder of Microsoft

To control the distribution of the money they are giving away. Some people feel that when you have a large amount of money they should try to help others with it, so they started the foundation to...