Did either of the sisters bring her umbrella?
Either is singular.
The answer would be descriptive writing
Inequality is a social, systematic and growing problem. For this reason, we can say that inequality is rampant, as it manages to establish itself at an impressive speed, making it difficult to stop.
Social inequality undermines access to basic rights by decreasing people's quality of life and increasing social injustice across the country. The greater the inequality, the more people become victims of this system and end up generating other human beings who also become victims of inequality, making this problem never end, but increasing more and more.
Governments benefit from these systems of inequality, as it opens space for more cases of corruption and favoring a small group of citizens over others. In addition, inequality increases political dependency, causing people to establish a type of cult of political figures who exhibit palliative, ineffective and flawed solutions.
Therefore, we can agree that inequality is a systematic problem, supported by the interests of privileged people, which stimulates its unprecedented increase.
