There should be no limits on owning and using guns
Answer:
Congress
Article 1 of the Congress is huge (just did a project), detailed explanation of the house and senate.
On average men Drink more, Smoke more and fall under other major things so on average they die younger
Answer:
Well based on the fact that the very first patented rock crushing machine was made in the year 1830, and the first successful, Eli Whitney Blake's, was in 1858, I'd say the development process was around 30 years.