A. The formation of new democracies after the fall of the Soviet Union
Hello There! ^_^
Your question: Which one of the following times would be the longest..?
You answer: The Paleozoic Era would be the longest time span.
the answer is option B.
Hope this helps!
Political map would be your best option to show which countries are part of the African nations.
I believe your answer would be places. Because a grid system makes it easier to find a location on a map. Hope this helps!