If you want to assess presidential candidate preferences of maricopa county registered voters classified by social class and age, you might randomly select voters from each subgroup according to their proportion in the entire county. this sampling technique is called sampling

Stratified random sampling

Explanation:

In stratified random sampling the population of choice is partitioned into subgroups. Then the samples for study are selected randomly from the subgroups.  

The given situation is the example of stratified random sampling this is because of the fact that the population is divided into subgroups on the basis of the social class and age. Then the voters were randomly selected from each subgroup.

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2. jose san martin

3.their economies remained dependent on outside powers.

4. drafted new economies

5. democracies have replaced dictatorships

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