what was a shared reason why austria - hungary and germany became members of the triple alliance?\no they…

what was a shared reason why austria - hungary and germany became members of the triple alliance?\no they had weak rulers.\no they had weak armies.\no they shared ethnic ties.\no they wanted to increase trade.
Answer
Answer:
C. They shared ethnic ties.
Brief Explanations:
Austria - Hungary and Germany had German - speaking populations and shared ethnic and cultural roots, which was a factor in their alliance - building. Their rulers were not weak, their armies were not weak, and trade was not the main reason for the Triple Alliance formation.