During the late 1800s, many Georgia Democrats believed that the "New South" prosperity depended on manufacturing rather than cotton. An important part of this group was the

a. Progressive Party
Selected:b. Farmer's AllianceThis answer is incorrect.
c. Freedmen's Bureau
d. Bourbon Triumvirate

To answer this question, we need to understand the context of the late 1800s and the mindset of Georgia Democrats during that time period. To do this, we can examine the key concepts and events during that era.

First, the late 1800s in the United States marked a period of significant economic and social transformation known as the "New South." This term referred to the efforts to diversify the Southern economy, particularly in the aftermath of the American Civil War and the abolition of slavery.

Prior to the Civil War, the Southern economy heavily relied on the cultivation of cotton, which was a major cash crop. However, after the war, Southern Democrats began to recognize the need for industrial development and diversification of industries for long-term economic growth.

With this background in mind, let's review the provided answer options:

a. Progressive Party: The Progressive Party emerged in the early 20th century, which is after the late 1800s. Therefore, this option is not relevant to the question.

b. Farmer's Alliance: The Farmer's Alliance was a significant political movement during the late 1800s. Although it initially focused on addressing the agrarian issues of farmers, it expanded its objectives to include economic reforms and protection for rural areas.

c. Freedmen's Bureau: The Freedmen's Bureau, established by Congress in 1865, aimed to assist newly freed African Americans with their transition to freedom through providing education, healthcare, and assistance in finding employment. While it played an important role in post-Civil War reconstruction, it is not directly related to the question of the New South's prosperity and the shift towards manufacturing.

d. Bourbon Triumvirate: The Bourbon Triumvirate refers to a group of three prominent Georgia politicians – Joseph E. Brown, Alfred H. Colquitt, and John B. Gordon – who dominated Georgia politics from the 1870s to the early 1900s. They advocated for maintaining white supremacy and opposed many social and economic reforms pushed by the Progressive movement. However, their primary focus was not on shifting towards manufacturing in the New South.

Considering the options and their relevance to the question, the correct answer is b. Farmer's Alliance. The Farmer's Alliance was a significant group within Georgia's Democratic Party during the late 1800s, advocating for economic diversification and a shift towards manufacturing in order to foster the prosperity of the New South.