Henry Bessemer was an inventor and engineer from England. Not only did he develop the Bessemer process for steel manufacturing, but he also designed a machine that could m â¦ ake bronze powder. What did Henry Ford invented?
The most effective form of reversible birth control after abstinence is an intra-uterine device (IUD), closely followed by hormonal contraception, which can come in the form of a pill, patch, implant, or insertable ring. IUDs have a failure rate of less than one percent in most controlled studies.
TodayÂ® Sponge is the most effective over-the-counter vaginal contraceptive, more effective than spermicides alone. Nonoxynol-9 is a spermicide used by millions of couples for over 40 years. Nonoxynol-9 prevents pregnancy by killing sperm on contact.