What two cities contributed to jazz in Pennsylvania

Philadelphia and Pittsburgh both made good contribute to the evolution in jazz in the twentieth century.

Explanation:

Idk if this is right I just know that New York and Chicago were contributes but aslo Philadelphia and Pittsburgh

d) a constitutional amendment

this defines the ability for a flex item to grow if necessary. it accepts a unitless value that serves as a proportion. it dictates what amount of the available space inside the flex container the item should take up.

give brainlest