Which level of life can be considered the first supraorganismal?

The first supraorganismal level of life can be considered the population level. This is because populations are composed of multiple individuals of the same species, and as such, they can be considered a single unit that is greater than the sum of its parts. Populations are capable of performing collective behaviors, such as migration, and can be seen as a single organism that is composed of many individuals. Additionally, populations can also be seen as an evolutionary unit, as the fitness of the population is determined by the collective fitness of its individuals. As such, populations can be seen as a higher-level organism that is greater than its individual components.