Features of the modern labor system resulting from union action include no work on weekends, 8 hour workday, enforced work safety regulations, paid vacation/sick days, national holidays off, overtime pay, and the minimum wage.
Most people started to get interested in art.
Answer:
Copper:
Copper compounds produce blue colors in fireworks. Although Copper has a red appearance in solid form, when it’s set alight it creates stunning blue fireworks. Copper is used in electrical wire and roughly half of all copper mined is used for this purpose.
