Research where Business Plans came from

I need someone to do a research piece of work for me please. The questions I want to find answers for are:

1. when did people start writing business plans?
2. Who came up with the idea of business plans and when?
3. Did you have to write business plans to borrow money in the 1700s?
4. When did it become needed to have a business plan to get a loan for a business?
5. when were business plans first used in education?

I am working on a piece about business plans and need as many references, stories and data as possible please!

Alan