Margaret I of Denmark

Definition and stakes

Helena Peake The Boy's Book of Heroes

Margaret governed her people well, but she dearly loved power, and was not content with the countries she already possessed; so she went to war with her near neighbours, the Swedes, and defeated and captured Albert, their king. Margaret kept him in prison seven years, and then only released him when he had agreed to give up his crown as the price of his liberty. In the year 1397 a great meeting of the States General of the three countries was held at a place called Calmar, and there it was settled that Denmark, Sweden, and Norway, should all be governed by one sovereign.
Source: Gutenberg

Various Encyclopaedia Britannica, 11th Edition…

In any case Denmark was bound to be the only gainer by the Union. Her population was double that of the two other kingdoms combined, and neither Margaret nor her successors observed the stipulations that each country should retain its own laws and customs and be ruled by natives only. In both Norway and Sweden, therefore, the Union was highly unpopular. The Norwegian aristocracy was too weak, however, seriously to endanger the Union at any time, but Sweden was, from the first, decidedly hostile to Margaret’s whole policy.
Source: Gutenberg

The Great Events by Famous Historians…

But the Queen, not wishing to contract a new marriage, and comprehending the importance of having a successor elected to the throne, proposed her nephew, Eric, Duke of Pomerania. This proposal the clergy and nobility approved, and they elected him to be king of Denmark and Norway after Margaret's death. Meanwhile Albert, King of Sweden, having, on account of his preference given to German favorites, incurred the hatred of his people, the Swedes requested Margaret to assist them against him, which she promised to do if they in return would make her queen of Sweden.
Source: Gutenberg

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