15. Which New Deal reform had the greatest effect on ending the Great Depression? Explain. NRA
WPA
AAA

WPA  is successful during the New Deal reform is further explained below in detail.

Explanation:

The New Deal was accountable for some important and significant accomplishments. the WPA presented compensated jobs to the jobless during the Great Depression in the United States, while creating up the country's public foundation, such as playgrounds, institutions, and streets. ... Within 1935 and 1943, the WPA employed 8.5 million people.

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).