Hubble's observation from redshift tells us that the speed of the galaxies is proportional to their distance , by using those informations we can map the position of the galaxies. But these observations were made just from Earth. So what I am asking is, does the mapping(position of the galaxies) show us that every point in the universe is the center(space really expand) or is it just an assumption from observations made from Earth?

Do the distances between other galaxies other than Milky way (eg. galaxyA , galaxyB and galaxyC) and their velocities follow Hubble’s pattern?

Are we certain that if we live in other galaxies, we will see other galaxies expanding from us following Hubble’s pattern? So that we can rule out the idea that we see other galaxies expanding from us because Milky Way is near to the center of the universe.