allies if you're referring to WWII
<span>Muhammad ibn Musa
al-Khwarizmi was a mathematician who wrote an algebra textbook that was used as
the standard for centuries, presented the very first systematic solution of the
linear and quadratic equations in Arabic, and wrote about astronomy and
astrology. He was even known as one of the fathers of algebra.</span>
This passage is about the speech of President Jackson in Congress, where he defended the process of remorse of the Indians.
The use of the word "progessive" refers to the continuation of a process begun earlier, where the Indians were massacred and expelled from their territories to the detriment of the white man's civilization. The former president used that term as a way to slow down an attitude that today would be understood as barbarism, but one that is part of US history.
What was the whole question?