What are some limitations when it comes to determining the cause of an event ?

a more perfect union: the creation of the u.s. constitution. the vote was unanimous. saddled with this weak government, the states were on the brink of not to lend a hand to any proceeding that seemed to pose a threat to that protection. delegates from virginia and other large states demanded that voting in

whole lotta ptsd going on

that would be the steamboat because none of the other things are forms of transportation