Origins of the EU:1951 Treaty of Paris ★★ 4大 ★ Flag:stars in the flag symbolize ideals of unity,solidarity and harmony among peoples of Europe. Circle is a symbol of unity. Motto:United in Diversity 28 member states 500 mln.people Europe day:May 9 www.europa.eu28 member states 500 mln. people Europe day: May 9 www.europa.eu Origins of the EU: 1951 Treaty of Paris Flag:stars in the flag symbolize ideals of unity, solidarity and harmony among peoples of Europe. Circle is a symbol of unity. Motto:United in Diversity