paragraph_text: This was a significant step towards restoring communion between Rome and Constantinople. It produced the Catholic-Orthodox Joint declaration of 1965, which was read out on 7 December 1965, simultaneously at a public meeting of the Second Vatican Council in Rome and at a special ceremony in Istanbul. The declaration did not end the schism, but showed a desire for greater reconciliation between the two churches. In May 1973, the Coptic Patriarch Shenouda III of Alexandria visited the Vatican, where he met three times with Pope Paul VI. A common declaration and a joint Creed issued after the visit demonstrated that there are virtually no more[additional citation needed] theological discrepancies between the Coptic and Roman Catholic Churches.

paragraph_text: Twenty pound notes were introduced by the Bank of England for the first time in 1725. The earliest notes were handwritten, and were issued to individuals as needed. These notes were written on one side only and bore the name of the payee, the date, and the signature of the issuing cashier. With the exception of the Restriction Period between 1797 and 1821 when the French Revolutionary Wars and the Napoleonic Wars caused a bullion shortage, these notes could be exchanged in full, or in part, for an equivalent amount of gold when presented at the bank. If redeemed in part, the banknote would be signed to indicate the amount that had been redeemed. From 1853 printed notes replaced handwritten notes, with the declaration ``I promise to pay the bearer on demand the sum of twenty pounds ''replacing the name of the payee. This declaration remains on Bank of England banknotes to this day. A printed signature of one of three cashiers appeared on the printed notes, though this was replaced by the signature of the Chief Cashier from 1870 onward.

paragraph_text: On January 1, 1973, the Central Bank of Nigeria introduced notes for 50 kobo, 1, 5, 10 and 20 naira. The 50 kobo notes were last issued in 1989. In 1991, 50 naira notes were issued, followed by 100 naira in 1999, 200 naira in 2000, 500 naira in 2001 and 1000 naira on October 12, 2005.

paragraph_text: The Bank of Sierra Leone is the central bank of Sierra Leone. It issues the country's currency, known as the Leone. The bank formulates and implements monetary policy, including foreign exchange.

paragraph_text: During his years in power, Amin shifted from being a pro-western ruler enjoying considerable support from Israel to being backed by Libya's Muammar Gaddafi, Zaire's Mobutu Sese Seko, the Soviet Union, and East Germany. In 1975, Amin became the chairman of the Organisation of African Unity (OAU), a Pan-Africanist group designed to promote solidarity among African states. Uganda was a member of the United Nations Commission on Human Rights from 1977 to 1979. The UK broke diplomatic relations with Uganda in 1977, and Amin declared that he had defeated the British and added "CBE" to his title for "Conqueror of the British Empire". Radio Uganda then announced his entire title: "His Excellency President for Life, Field Marshal Alhaji Dr. Idi Amin Dada, VC, DSO, MC, CBE".As Amin's rule progressed into the late 1970s, there was increased unrest against his persecution of certain ethnic groups and political dissidents, along with Uganda's very poor international standing due to Amin's support for the terrorist hijackers in Operation Entebbe. He then attempted to annex Tanzania's Kagera Region in 1978, so Tanzanian president Julius Nyerere had his troops invade Uganda; they captured Kampala on 11 April 1979 and ousted Amin from power. Amin then went into exile, first in Libya and then in Saudi Arabia, where he lived until his death on 16 August 2003.

paragraph_text: Under German control, and even before then, Japanese traders and fishermen from time to time visited the Marshall Islands, although contact with the islanders was irregular. After the Meiji Restoration (1868), the Japanese government adopted a policy of turning the Japanese Empire into a great economic and military power in East Asia.

paragraph_text: Andrzej Sławiński (born July 31, 1951 in Warsaw) is a Polish economist and Professor of Economics at the Warsaw School of Economics. He is a member of the Council of Monetary Policies since 2004 and a fellow of Collegium Invisibile.

paragraph_text: William McKinley (January 29, 1843 -- September 14, 1901) was the 25th President of the United States, serving from March 4, 1897 until his assassination in September 1901, six months into his second term. McKinley led the nation to victory in the Spanish -- American War, raised protective tariffs to promote American industry, and maintained the nation on the gold standard in a rejection of free silver (effectively, expansionary monetary policy).

paragraph_text: The U.S. Constitution provides that Congress shall have the power to "borrow money on the credit of the United States". Congress has exercised that power by authorizing Federal Reserve Banks to issue Federal Reserve Notes. Those notes are "obligations of the United States" and "shall be redeemed in lawful money on demand at the Treasury Department of the United States, in the city of Washington, District of Columbia, or at any Federal Reserve bank". Federal Reserve Notes are designated by law as "legal tender" for the payment of debts. Congress has also authorized the issuance of more than 10 other types of banknotes, including the United States Note and the Federal Reserve Bank Note. The Federal Reserve Note is the only type that remains in circulation since the 1970s.

paragraph_text: Social Issues and Policy Review is an annual peer-reviewed academic journal published by Wiley-Blackwell on behalf of the Society for the Psychological Study of Social Issues along with "Analyses of Social Issues and Public Policy" and the "Journal of Social Issues". The journal was established in 2007. The current editors-in-chief are Samuel L. Gaertner (University of Delaware) and Rupert Brown (University of Sussex). The journal covers social issues and public policy.

paragraph_text: The Qatar Central Bank was originally the Qatar Monetary Agency (and was known before that as Qatar Dubai Currency Board), founded on May 13, 1973 after Dubai joined the United Arab Emirates and disengaged itself from British monetary policy which the area had previously followed. The Qatar Monetary Agency assumed the duties of a central bank. In 1973, Amiri Decree No. 24 authorized the issuance of the Qatari Riyal (QR).

paragraph_text: The euro is managed and administered by the Frankfurt-based European Central Bank (ECB) and the Eurosystem (composed of the central banks of the eurozone countries). As an independent central bank, the ECB has sole authority to set monetary policy. The Eurosystem participates in the printing, minting and distribution of notes and coins in all member states, and the operation of the eurozone payment systems.

paragraph_text: The Monroe Doctrine was a United States policy of opposing European colonialism in the Americas beginning in 1823. It stated that further efforts by European nations to take control of any independent state in North or South America would be viewed as ``the manifestation of an unfriendly disposition toward the United States. ''At the same time, the doctrine noted that the U.S. would recognize and not interfere with existing European colonies nor meddle in the internal concerns of European countries. The Doctrine was issued on December 2, 1823 at a time when nearly all Latin American colonies of Spain and Portugal had achieved, or were at the point of gaining, independence from the Portuguese and Spanish Empires.

paragraph_text: Monetary policy concerns the actions of a central bank or other regulatory authorities that determine the size and rate of growth of the money supply. For example, in the United States, the Federal Reserve is in charge of monetary policy, and implements it primarily by performing operations that influence short - term interest rates.

paragraph_text: In 1970 the country switched its currency from the Bermudian pound to the Bermudian dollar, which is pegged at par with the US dollar. US notes and coins are used interchangeably with Bermudian notes and coins within the islands for most practical purposes; however, banks levy an exchange rate fee for the purchase of US dollars with Bermudian dollars. Bermudian notes carry the image of Queen Elizabeth II. The Bermuda Monetary Authority is the issuing authority for all banknotes and coins, and regulates financial institutions. The Royal Naval Dockyard Museum holds a permanent exhibition of Bermuda notes and coins.

paragraph_text: In 330, Constantine moved the seat of the Empire to Constantinople, which he founded as a second Rome on the site of Byzantium, a city strategically located on the trade routes between Europe and Asia and between the Mediterranean and the Black Sea. Constantine introduced important changes into the Empire's military, monetary, civil and religious institutions. As regards his economic policies in particular, he has been accused by certain scholars of ``reckless fiscality '', but the gold solidus he introduced became a stable currency that transformed the economy and promoted development.

paragraph_text: Policy Studies Journal is a quarterly peer-reviewed academic journal published by Wiley-Blackwell on behalf of the Policy Studies Organization and the American Political Science Association's Public Policy Section. The journal was established in 1972. The current editor-in-chief is Edella Schlager (University of Arizona). The journal publishes articles on a wide range of public policy issues.

paragraph_text: Since the end of the Second World War, France has become an ethnically diverse country. Today, approximately five percent of the French population is non-European and non-white. This does not approach the number of non-white citizens in the United States (roughly 28–37%, depending on how Latinos are classified; see Demographics of the United States). Nevertheless, it amounts to at least three million people, and has forced the issues of ethnic diversity onto the French policy agenda. France has developed an approach to dealing with ethnic problems that stands in contrast to that of many advanced, industrialized countries. Unlike the United States, Britain, or even the Netherlands, France maintains a "color-blind" model of public policy. This means that it targets virtually no policies directly at racial or ethnic groups. Instead, it uses geographic or class criteria to address issues of social inequalities. It has, however, developed an extensive anti-racist policy repertoire since the early 1970s. Until recently, French policies focused primarily on issues of hate speech—going much further than their American counterparts—and relatively less on issues of discrimination in jobs, housing, and in provision of goods and services.

paragraph_text: Fifty pound notes were introduced by the Bank of England for the first time in 1725. The earliest notes were handwritten and were issued as needed to individuals. These notes were written on one side only and bore the name of the payee, the date, and the signature of the issuing cashier. With the exception of the Restriction Period between 1797 and 1821, when the French Revolutionary Wars and the Napoleonic Wars caused a bullion shortage, these notes could be exchanged in full, or in part, for an equivalent amount of gold when presented at the bank. If redeemed in part, the banknote would be signed to indicate the amount that had been redeemed. From 1853 printed notes replaced handwritten notes, with the declaration ``I promise to pay the bearer on demand the sum of fifty pounds ''replacing the name of the payee. This declaration remains on Bank of England banknotes to this day. A printed signature of one of three cashiers appeared on the printed notes, although this was replaced by the signature of the Chief Cashier from 1870 onward.

paragraph_text: Hafizullah Amin (Pashto/Dari: حفيظ الله امين‎; born 1 August 1929 – 27 December 1979) was an Afghan communist politician during the Cold War. Amin was born in Paghman and educated at Kabul University, after which he started his career as a teacher. After a few years in that occupation, he went to the United States to study. He would visit the United States a second time before moving permanently to Afghanistan, and starting his career in radical politics. He ran as a candidate in the 1965 parliamentary election but failed to secure a seat. Amin was the only Khalqist elected to parliament in the 1969 parliamentary election, thus increasing his standing within the party. He was one of the leading organizers of the Saur Revolution which overthrew the government of Mohammad Daoud Khan. In 1979 he named himself president, prime minister, and chairman of the Khalq wing. He has been described as "ruthless" and a "radical Marxist".Amin's short-lived presidency was marked by controversies from beginning to end. He came to power by disposing of his predecessor Nur Muhammad Taraki and later ordering his death. Amin made attempts to win support from those who revolted against the communist regime which had begun under Taraki, but his government was unable to solve this problem. Many Afghans held Amin responsible for the regime's harshest measures, such as ordering thousands of executions. Thousands of people disappeared without trace during his time in office. The Soviet Union, which was dissatisfied with Amin, intervened in Afghanistan while invoking the Twenty-Year Treaty of Friendship between Afghanistan and the Soviet Union. Amin was assassinated by the Soviets on December 27, 1979 as part of Operation Storm-333, having ruled for slightly longer than three months.

Question: What are the notes issued by the organization that controls monetary policy in the nation that Amin visited twice?
Answer: obligations of the United States