Answer:
Oil Producer
Explanation:
The US is the Number 1 leading producer of oil.
D. South american independence. Simon Bolivar was a military and political leader who played a large role in establishing venezuela. and Jose de San Martin was a political leader in argentina who played a very large part in South America's fight for independence.
the correct answer would be earthquakes because it gives us the answer right in the question by saying "a region where tectonic activity is", and in earthquakes they call the parts of the earthquake where it moves the ground apart tectonic plates.
Hope I helped.
<u>Answer:</u>
<em>Series of topographic maps in chronological order.
</em>
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<u>Explanation:</u>
If we see the map in a chronological order, then that gives us the rough idea about the flow, angle and area of the river. A detailed study of the topographic map gives us the idea about the direction in which the river has flown over the years. Based on this map we can successfully form a model which will give us a future position and flow pattern of the river. So in the light of the above facts the use of the topographical maps in the chronological order is the most appropriate tool for mapping the future course of the river.