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Kuhusu 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. WikipediaKuhusu Ruble ya Urusi
The ruble or rouble is the official currency of Russia. Banknotes and coins are issued by the Central Bank of Russia, which is Russia's monetary authority independent of all other government bodies.
The ruble is the second-oldest currency in continuous use, after pound sterling, as well as the first decimal currency. The ruble was the currency of the Russian Empire and later the Soviet Union, where it was known as the Soviet ruble. Following the dissolution of the Soviet Union in 1991, the Soviet ruble was replaced in Russia with the Russian ruble at par in the following year. The Russian ruble continued to be used in 11 post-Soviet states, forming a "ruble zone" until 1993. In 1998, the ruble was redenominated shortly before the 1998 financial crisis, at a rate of 1000 RUR = 1 RUB.
The ruble is a free-floating currency and is subdivided into 100 kopecks which have fallen out of use due to inflation. In 2023, the digital ruble was introduced. The Russian ruble is also used as a de facto legal tender in Baikonur, Abkhazia and South Ossetia. Wikipedia