Is this quotation a reliable source for historians to use if they are writing about the death of julius caesar?

Did the spanish settlers and missions have a positive effect on world history? why, what did they do that was positive? why was the treaty of paris (1763) good for the world/world history? did the plymouth colony have a positive effect on world history? why, what did they do that was positive?

The northwest ordinance guaranteed three rights for the settlers of the northwest territory. what were they?

What misguided strategy caused lord william howe and the british to fail?