At what age can a cat have her first litter? Puberty (the age at which animals can reproduce) in the cat ranges from 4 to 12 months, with the average being 6 to 9 months. At puberty, cats are generally about 75% of their mature body weight.Domestic shorthair cats, as a breed, generally reach puberty earlier than domestic longhair cats.t what age can a cat have her first litter? Puberty (the age at which animals can reproduce) in the cat ranges from 4 to 12 months, with the average being 6 to 9 months. At puberty, cats are generally about 75% of their mature body weight.
While Eli Whitney is best remembered as the inventor of the cotton gin, it is often forgotten that he was also the father of the mass production method. In 1798 he figured out how to manufacture muskets by machine so that the parts were interchangeable.
When Europeans founded colonies in America they relied on cotton to make a living. In the early days, growing and harvesting cotton was a hard job that was done manually by slaves. In 1793 an American, Eli Whitney, invented the cotton gin, a machine that separated seeds from fiber. This new invention allowed farms to produce even more cotton. In the second part of the 20th century people started to produce synthetic fibers, like nylon and acrylic. The importance of cotton fiber began to drop.