Why was comte thrown out
of school in 1816?

Comte was admitted to the École Polytechnique in Paris. The École Polytechnique was notable for its adherence to the French ideals of republicanism and progress. The École closed in 1816 for reorganization, however, and Comte continued his studies at the medical school at Montpellier. When the École Polytechnique reopened, he did not request readmission.

they wanted the u.s. to fight on the side of the central powers.