Explanation:

"Right to the City" is a concept and a call to action to expand the rights of urban inhabitants. It emphasizes the right of all city dwellers to shape and access the benefits of urban life.

UN-Habitat and 'Right to the City': The concept of the "Right to the City" has been widely acknowledged in international discourses, especially after its emphasis in the Habitat III Conference and the New Urban Agenda (adopted in 2016). The UN-Habitat does recognize the importance of this right, but it does not have the authority to "monitor" the commitments of individual countries in a binding sense. However, the New Urban Agenda does encourage countries to take this into consideration.

Reclaiming Public Spaces & Participation: One of the foundational principles of the "Right to the City" is the democratization of urban spaces. This means that city dwellers have a right to access and participate in shaping the city's public spaces and decision-making processes.

Public Services to Unauthorized Colonies: The "Right to the City" encompasses the idea that everyone, regardless of their socio-economic or legal status, should have equal access to the city's services and benefits. However, the implementation and realization of this right depend on national and local policies, and it's not an automatic guarantee that the state cannot deny services to unauthorized colonies.

Given the above analysis, the correct statements are 1 and 2.