Lake
the name given to a body of fresh water that is completely surrounded by land.
THE ANSWER IS RAILROADS!!
aztec pwople atacked cortez and burned his ship
The correct answer is - public information.
The census data is an example of public information. The census data itself is consisted of all important informations about the population of the given country and all those informations are used for making the long term (mainly) economic politics for the country, but also represent an official proof that can be seen at any time by the population so that they know what's the situation in the country from certain perspectives.