Antoine Henri Becquerel was a French physicist who did a lot of work with fluorescent minerals. While conducting some experiments with minerals containing uranium, he discovered , but he did not know it at the time.

In ohio in 1872, the cleveland massacre was a violent labor dispute at standard oil refineries in cleveland. a takeover by standard oil of the refineries in cleveland. an attempt to stop standard oil from becoming a monopoly. a failed attempt by standard oil to take over other refineries.

How did the united states ironically create a slaverybased market economy and democratic political system?

The nile river is referred to as the giver and taker of life. explain what this means.