题目选项分析

The Scandinavian assault on Western Europe culminated in the early eleventh century with the Danish conquest of the English kingdom, which other Scandinavian kings attempted to repeat, unsuccessfully, later in the same century.

The Scandinavian assault on Western Europe culminated in the early eleventh century with the Danish conquest of the English kingdom, an achievement that other Scandinavian kings attempted to repeat later in the century, but without success.