The apex answer is "Germany guaranteed Austria-Hungary its support in the conflict with Serbia"
<span>Women - needed to earn their right to vote
Children - were used mainly in factories almost as slaves to poor wage
Indentured Servants - were treated more worse then slaves were
Slaves - had to work till they were useless
Native Americans - were fought off their land
Working Class - treated poorly by rich business mongers </span><span />
Developed countries rely on exports from developing economies. When developed countries purchasing power is impaired, it also affects the export based economies of the developing economies.