Answer:
Boarders were established through fighting and trade, by the mid nineteenth century almost 90% or Africa was under European rule.
Side note:
When in doubt assume white men fought and took over
It is the crops that did that.
When Madison was hired in her dream job, she told her friends that her hard work had paidoff, but when she was skipped over for a promotion, she tells her friends that her colleagues are preventing her from getting her work done. Madison is displaying: the self-serving bias.
The self-serving bias<span> is people's tendency to attribute positive events to their own character but attribute negative events to external factors. It's a common type of cognitive </span>bias<span> that has been extensively studied in social psychology
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Hope that helps you. :D