Stability has always been a characteristic of constitutional law of the Czech Republic and Czechoslovakia, and their constitutions (the sum of all constitutional acts). Since the Constitution came into force, it has only been modified a few times, and the amendments did not have a major impact on the Czech constitutional system. The first Act of Parliament modifying the Constitution was Constitutional Act No. 347/1997 Coll, on the Creation of Higher Self-Governing Units and Amending Constitutional Act of the Czech National Assembly No. 1/1993 Coll., the Constitution of the Czech Republic. It created higher territorial self-governing units, as assumed by Article 100 paragraph 3 of the Constitution. The wording of the Constitution was further changed by Constitutional Act No. 300/2000 Coll., relating to accession of the Czech Republic into the North Atlantic Alliance in 1999. The act changed provisions of the Constitution on matters such as deployment of armed forces, stay of allied armed forces on the territory of the Czech Republic, participation of the country in the defence systems of international organisations, and division of powers between the cabinet and the Parliament in such matters. Another modification to the Constitution brought Constitutional Act No. 448/2001 Coll. The Cabinet has prepared an amendment of the constitution in February 2000, but this has been this rejected by the Chamber of Deputies in second reading. Part of the bill proposed the change of article 98 of the Constitution, in preparation for the new wording of Act No. 6/1993 Coll. on the Czech National Bank. As a result of the rejection by the legislature, the Act on the Czech National bank became incompatible with the Constitution. The new wording of the Act, which entailed the necessity to modify the constitution, has become a necessity as a consequence and a requirement of the Treaty Establishing the European Economic Community and the Protocol on the Statute of the European System of Central Banks and the European Central Bank, attached to this treaty. A new bill has been drafted, limited to a technicality – replacing ""the stability of currency"" by ""the stability of prices" "in article 98. Passed on 18 October 2001, the so-called 'Euro-amendment', was a rather important change to the Constitution. Having entered into effect on 1 June 2002, Act No. 395/2001 Coll. added paragraph 2 into article 1, stating that the country abides by obligations arising from international law. It changed article 10, hitherto ascribing high legal force only to international treaties on basic human rights and freedoms, broadening it to grant this higher legal force to all promulgated international treaties, which the Parliament agreed to ratify.