1- The Soviet forces constructed
the Berlin Wall to prevent the
escape of East Germans into
West Germany.
2- US president Ronald Reagan
delivered a famous speech
challenging Soviet leader
Mikhail Gorbachev to tear
down the Berlin Wall.
3- Newly independent Hungary
opened its border with Austria.
4- East German leaders gave
orders to open the gates
of the Berlin Wall.
5- The representatives of East
and West Germany signed
the Reunification Treaty.
That is the PLATO answer
Option A. The disadvantage that secondary sources have is that they are created by people who have never experienced the historical period they describe.
<h3>What is meant by secondary sources?</h3>
This is the term that is used to describe the data that are known to already be in existence. These are the types of data that can be gotten from journals or from large government data base.
These types of data are very unlike the primary data that the researcher has to source and create for himself. The primary data would be gotten directly from the field by the researcher who wants to carry out an experiment to determine a phenomenon.
Read more on secondary data here: brainly.com/question/14806486
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Complete question
Which of the following describes a disadvantage secondary sources have compared to primary sources? A.They are created by people who have never experienced the historical period they describe. B.They are extremely rare and much harder for historians to locate. C.They do not rely on historical evidence to support their conclusions. D.They focus too closely on a single piece of evidence instead of providing summaries.
The answer is he claimed new York harbor and the Hudson River for the Dutch. It was later named after him