The answer is:
1. It increases competition.
C , this was before the civil war in 1861 and it required all captured escaped slaves to be brought to their masters.
<span>The Muslim civilization had a great impact in Spain, by the artistic, cultural and religious contributions, the Muslim language influenced much in the Iberian peninsula and extended in other parts of Spain. A stage of partnership between the Moroccan and Spanish society was opened, and new Muslim associations were inaugurated in the country. The construction of the Marbella mosque is an example of the Muslim contribution and the growing Muslim population in Spain aroused interest in tourism in Spain.</span>
Marie Curie studied the radiation of all compounds containing the known radioactive elements, including uranium and thorium, which she later discovered was also radioactive. She also found out that:
- you can exactly measure the strength of the radiation from uranium;
- the intensity of the radiation is proportional to the amount of uranium or thorium in the compound - no matter what compound it is;
- the ability to emit radiation does not depend on the arrangement of the atoms in a molecule; it must be linked to the interior of the atom itself - a revolutionary discovery!
When she realized that some uranium and/or thorium compounds had stronger radiation than uranium, she made the following hypothesis: there must be an unknown element in the compound which had a stronger radiation than uranium or thorium. Her work aroused the interest of her husband, Pierre Curie, who stopped his own research on crystals and joined the "detective work" with his wife. And Marie was proven right: in 1898 the Curies discovered two new radioactive elements: radium (named after the Latin word for ray) and polonium (named after Marie's home country, Poland).
