Answer:
The alliance system
Explanation:
German government's guarantee to offer aid to Austria-Hungary, and Russia's danger to counter if Austria-Hungary attacked Serbia made the alliance together framework and instrument for animosity. As proven by the evidence, the hostility between certain powers was uncontrollable therefore causing the outbreak of WW1.
haha, oh okay... your welcome
Social limitations
African discriminated for everything. They are not allowed to enter specific restaurants, they are forbidden to use public restroom, not allowed to enter theatre, etc
Political Limitations
Back then, their representative in the government is close to non existent
Economic limitations
Most companies only want to hire them for low-class hard labor with low pay. Not only that, it really hard for them to own a property during that period
hope this helps
Nothing everything they wanted they didn’t get so they wanted war and that was that
Sorry if I'm to late but I thinks it's c. Many couldn't speak English and had no skills. Hope this helps ;)