Final answer:
Thomas E. Watson in Congress focused on farmers' issues which incorporated advocacy for low interest rates, regulation of railroads and banking, and encouraging political action to address the economic challenges faced by farmers.
Step-by-step explanation:
Thomas E. Watson focused on several issues related to farmers in Congress. He was involved in the agricultural reform movement, which addressed the challenges faced by farmers in the late 19th and early 20th centuries.
These issues included the need for low interest rates on loans, government influence over railroads and banking which impacted costs and logistics for farmers, and the political action necessary to effect change.
Given the plight of farmers, who were increasingly in debt due to various economic pressures, organizations like the Farmers Alliance provided education, and this advocacy ultimately contributed to the formation of the Populist Party. Their platform aimed to support farmers and the working class with measures such as low-interest loan programs, among other socio-economic reforms.