Why did people build empires?

Those factors include philosophy, political systems, technology, trade, and military developments. When establishing an empire, desire for more resources, a better standard of living for its people and the desire for power among its leaders were big factors. But so were the philosophies of the people of a country.

explanation:

cause they can

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.