What motivated Germany to make an alliance with Austria Hungary?

A. the desire to invade from the United States

B. Fear of aggression from England

D. Fear of aggression from France

The right answer here is: D.

Explanation:

There was a long history of conflicts and rivalries between France and German kingdoms and princedoms. Germany got unified and rose to be a highly industrialized nation rather late (second half of the 19th century). But the unity of Germany under the leadership of Prussia came after defeating France in the Franco-Prussian War of 1870-1871, a conflict that fed many of the grievances that led to WWI and WWI. So, the German empire was afraid of French power and resentments and it's was one of its motives to build an alliance with Austria-Hungary.