For future people, the answer is the Grand coulee Dam
The most populous country is China and its population is 1,379,302,771.
You forgot the options, but I can give you some examples, maybe this will help:
A distribution map will show you where and how much of a certain thing is happening. for example:
the percentage of literate or illiterate people in the different places
some characteristics, for example the average age, or average income for people in a certain area - here you would give a different colour for the different age or income groups.
Mixed Forests because it’s made up of large open areas of grasses but I’m not too sure
