15th Century by Johannes Widmann
Roman numerals came into use in the 4th Century BC. They originated from etruscan numerals but the symbols were changed. They were used for mathematics.
Mary Somerville was a Scottish mathematician and astronomer. She contributed many things to the mathematic world, but her invention of the commonly used variables for algebraic math is the most significant.
the instruments in mathematics
Beginning in the 6th century BC with the Pythagoreans, the Ancient Greeks began a systematic study of mathematics as a subject in its own right with Greek mathematics. Around 300 BC, Euclid introduced the axiomatic method still used in mathematics today, consisting of definition, axiom, theorem, and proof.
It would be Nicholas Copernicus
Nicolaus Copernicus was the sixteenth-century astronomer who proposed the heliocentric model of the solar system, demonstrating that the Earth orbits the Sun. His book "De Revolutionibus Orbium Coelestium" laid the foundation for modern astronomy.
French
Mail in the sixteenth century was delivered using animals. Some of the animals used to deliver mail include pigeons, reindeer, horses, camels and many more.
15th Century by Johannes Widmann
actors used bladders of pigs blood which they burst when they had been stabbed
Eratosthenes 5th Century BCE.
Amerigo Vespucci was a navigator who used Astronomy, not strictly an astronomer.
The addition symbol was first used in 1544 by Michael Stiple. I do not know when the subtraction sign was first used, I'm still trying to find that out myself!
Regiment is a french word which became commonly used in the military in Europe in the early sixteenth century. It originated from late latin regimentum.
Hypatia was a mathematician that helped improve the astrolabe which was a instrument used to measure the position of the sun and stars.
Roman numerals came into use in the 4th Century BC. They originated from etruscan numerals but the symbols were changed. They were used for mathematics.