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.
Birth Control Shot. The birth control shot, known as Depo Provera, is a hormonal injection that protects against pregnancy for three months. For the typical couple, it is more effective than the birth control pill -- only 3% of users get pregnant in a year. Pros: Only injected four times per year, highly effective. Cons: Cost (about $240 per year), may cause spotting and other side effects.