Given the nucleotide sequences below, what type of mutation has occurred? Before:

A C C G T A T G T C A T

After:

A C C G T A A G T C A T

Question 6 options:

substitution

mixer

deletion

insertion

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.