Answer:
<em>The invention of the telegraph</em><em> in 1844 made it possible for people to communicate for the first time instantaneously over long distances.</em>
Explanation:
"It demonstrates how people will live in the future" and "It helps us avoid repeating past mistakes" and "<span>It helps us understand different peoples and nations" are all correct, although the first option does not always work out very well!</span>
Your answer is 3, the Great Dividing Range
If you look at the photo attached, the Great Dividing Range is on the right, much like the map you provided.
Hope this helps :)