Sustainable Development Goal (SDG) #10 is to "Reduce inequality within and among countries." This goal aims to reduce the gap between the rich and poor, both within and among countries, in order to promote equality, social inclusion, and sustainable development.

Inequality is a major challenge to sustainable development, as it undermines the ability of people to reach their full potential and contributes to poverty, social unrest, and instability. It also perpetuates intergenerational poverty, and can limit the ability of countries to achieve their development goals.

SDG #10 seeks to address these challenges and reduce inequality within and among countries. This includes reducing income inequality, promoting gender equality, and improving access to education, health care, and economic opportunities for marginalized and disadvantaged groups. It also seeks to reduce inequality by promoting inclusive growth and by addressing the root causes of poverty and inequality.

Achieving SDG #10 will require a multi-stakeholder approach, including investments in policies and programs that promote equality and social inclusion, as well as in inclusive economic growth. It will also require strong partnerships between governments, the private sector, civil society, and international organizations, to address the root causes of poverty and inequality, and to promote inclusive and sustainable growth.

The private sector also has a role to play in achieving SDG #10, by promoting inclusive growth, reducing inequality, and promoting gender equality. Civil society and individuals also have a role to play, by advocating for better policies, promoting equality and social inclusion, and by supporting the development of inclusive and sustainable growth.

In summary, SDG #10 is a critical goal for reducing inequality within and among countries. By promoting equality and social inclusion, and by reducing the gap between the rich and poor, we can create a more equitable and sustainable world, where all people have the opportunity to reach their full potential and contribute to society.