How does this sound for a better topic sentence?
Thesis: The German immigrants, whom founded Frankenmuth, drastically altered their work force due to the collapse of the community's two largest industries, lumber and beer production. The community's dynamic changed, forcing the town to unite under one industry - tourism. This union forced workers to "re-tool", reshape, and rethink the town's potential as well as each individual's ability within the town's framwork.