The Differences in Spanish Across the World

For historical reasons, pronunciation can also be different

Another important difference is the pronunciation of c and z as if they were an s in Latin America. This is fundamentally due to the fact that at the time of the colonisation of the Americas there were already two forms of Castilian speaking: one in the North that was centred around Madrid and the other in the South, whose centre was Seville. The issue is that the z and c in Seville were pronounced similar to the regular s sound and it was from there that the first settlers who came to America set sail from and because of that, their way of speaking triumphed.