Answer:
The driving force was Economics; the need for resources and technological advances.
Explanation:
Europeans took over Africa in the 18's. The Scramble For Africa then make the European to enslave Africans and took all their resources.
It all started because of Europeans' competitions. In order to be better than their neighbor in the continent(Europe), Europeans needed ''more'' riches.
Europeans wanted Africa resources such as rubber. For England, they only want more power but Germany want to compete and beat the ''English'' people.
So, the Europeans main driving force is Economics.
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Germany sunk it using their submarines.
The following sources claiming or supporting Yu Hsien above is letter D. Yu Hsien hated non-Chinese religions like Christianity. Taiyuan massacre during Boxer Rebellion, which killed 45 Christians with children. It was at this time tha Yu Hsien was the governor of Shanxi.