Answer:Rivers were attractive locations for the first civilizations because they provided a steady supply of drinking water and made the land fertile for growing crops. Moreover, goods and people could be transported easily, and the people in these civilizations could fish and hunt the animals that came to drink water.
The answer is ex post facto. This is a law where in it
changes retroactively in terms of consequences that are considered to be legal.
With this, it allows convicted criminals to have no increase in their sentences
because of this law.