But they weren't welcome neither and they were driven out many times. I somehow have a feeling they were trying to push the Africans out, but that failed.
We welcomed africans in the Americas as slaves, we werent "trying to push them out"
We didnt massacre the Africans, we enslaved them. We massacred the Natives.
Plus the Africans had already been exposed to Europeans for quite some time and were more immune to our diseases such as small pox - The Natives were not, and so many of them caught the disease