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Cardano (ADA / USD)
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Kuhusu Cardano
Cardano is a public blockchain platform which uses the cryptocurrency ADA to facilitate transactions.
Cardano's development began in 2015, led by Ethereum co-founder Charles Hoskinson. The project is overseen and supervised by the Cardano Foundation based in Zug, Switzerland. When launched in 2017, it was the largest cryptocurrency to use a proof of stake consensus mechanism, which is seen as more environmentally friendly than proof-of-work protocols. WikipediaKuhusu Dola ya Marekani
Dola ya Marekani ni sarafu rasmi ya Marekani, iliyoanzishwa mwaka 1792 na kutolewa na Hifadhi ya Shirikisho. Ni sarafu kuu ya akiba duniani, inayotumika sana katika biashara ya kimataifa, bidhaa, na masoko ya fedha za kigeni. Mbali na Marekani, nchi kama Ecuador, El Salvador, na Zimbabwe pia hutumia dola ya Marekani kama sarafu yao rasmi.
Dola ya Marekani inapatikana kwa noti za dola 1, 2, 5, 10, 20, 50 na 100. Kuna pia sarafu ya dola 1.
Dola moja ina senti 100. Senti huitwa pia "penny" nchini Marekani. Kuna sarafu za nusu dolar, robo dolar na sarafu za senti 10, 5 na 1.
Hadi mwaka 1969 noti ya dolar ya Marekani ilikuwa na ahadi ya kwamba serikali ya Marekani itampatia kila mtu dhahabu kulingana na thamani ya dola hizi akipenda kuzibadilisha.
Usawa huu na thamani ya dhahabu ulifutwa. Leo hii dola ya Marekani ni pesa ya kuiamini serikali kama pesa zote. Maana yake watumiaji husadiki ya kwamba serikali haitachapisha dola kushinda uwezo wa uchumi na thamani ya bidhaa zilizopo nchini Tanzania.
Tangu mwisho wa Vita Kuu ya Pili ya Dunia dola ya Marekani imekuwa pesa kuu duniani na sehemu kubwa ya biashara ya kimataifa hukadiriwa kwa dola hizo. Wikipedia