Yes they are.
yes airsoft guns are legal in OHIO
Yes, airsoft guns are legal in Canada.
Usually airsoft guns aren't allowed in public places
Yes
Yes
Yes, they are.
Yes
Yes, i'm 14 and i own 4 airsoft guns.. As long as its on your property and not like in a city
18 in the USA
I don't know about Canadian airsoft stores, but I know that most airsoft in North America sell Canadian-legal airsoft guns.
Yes, they're legal in all states.
In the state of Florida, Airsoft guns are legal to use. Depending on the area you live in, you would have to be age 18 or 21 in order to purchase and use one.