It is not just Muslims, all human societies througout history have done that.
Good examples would be the
Bantu explosion, where a small group of farmers from where Nigeria is now invented cattle ranching around 1500 BC, became very successful, and expanded to fill most of Sub-Saharan Africa. In the process the most of the pre-existing hunter-gather populations disappeared.
Or for a more recent example, look at the way
Europeans filled the Americas in the second half of the last millennium. (1492-1900). Again most of the local people died from disease or war, or lost their lands and starved. It is not just Muslims who want to expand and displace native populations. We are all just a guilty.