How does Howard zinn contrast the grange movement with the farmers alliance movement?

The Farmers' Alliance became out of the Grange development, which framed social associations among agriculturists and which had thrived the Midwest and had spread in ubiquity toward the South. Individuals were known as "Alliancemen".

The development involved two separate associations: the National Farmers' Alliance (Northern Alliance) in the Great Plains states, and the National Farmers' Alliance and Industrial Union (Southern Alliance) focused in Louisiana, Texas, and Arkansas.

In the South Alliance included separate "Shaded Alliance" parts for African-American ranchers, however in general, it was seemingly the main biracial association at the time in the South