Final answer:
William Jennings Bryan was supported by the populace for his advocacy of populist policies, like free silver and opposition to the gold standard, and his reforms which appealed to farmers, the financially struggling, and progressives.
Step-by-step explanation:
The population supported William Jennings Bryan for various reasons during his political career in the late 19th and early 20th centuries. Bryan was known for his powerful oratory skills and his advocacy for the common people. He supported populist policies such as free silver, which appealed to farmers and those who were struggling financially during periods of economic hardship. His position aimed at increasing the money supply and thus sparked hope among those who suffered from debt and deflation.
Bryan's opposition to the gold standard and his famous "Cross of Gold" speech at the Democratic National Convention in 1896 galvanized his support base, who saw him as a champion of their interests against the wealthy banking and business elites. Furthermore, Bryan's push for progressive reforms, including women's suffrage and anti-imperialism, broadened his appeal to a diverse group of voters who desired change.