Isaac Singer
18111875
American inventor and business leader who developed the Singer sewing machine and founded one of the first American multi-national businesses
2 goffadwriaeth wedi'u canfod
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Gweld pob un yn Bywydau gyda'r hidlydd wedi'i gymhwyso18111832
French mathematician who solved the 350-year-old problem of polynomial solvability by radicals, foundational to Galois theory and group theory
