A, freed all slaves as declared by Abraham lincoln
China used the one-child-policy, in which a family can only have one child
however, it has now expanded to a two-child-policy to address the issue of a growing population of males, and a smaller population of females
hope this helps
Early developments in electric power technology helped industries to harness the power of electricity and transport it from place to place. In the early 1800s, the work of Nikola Tesla led to the development of alternating-current (AC) and direct-current (DC) technologies, including batteries and cross-country power transfer. The experiments of Georg Simon Ohm led to his 1927 discovery of Ohm's Law, which measures electrical current and opened the door for increased complexity in electrical circuits.
Answer:
... Hey my other account just got banned lol
Explanation:
