History of tennis royal families of Europe were besieged and real tennis was largely abandoned. Real tennis played a minor role in the history of the French Revolution, through the Tennis Court Oath, a pledge signed by French deputies on a real tennis court, which formed a decisive early step in starting the revolution. In England, during the 18th and early 19th centuries as real tennis declined, three other racquet sports emerged: racquets, squash racquets, and lawn tennis (the modern game). The modern sport is tied to two separate inventions. Between 1859 and 1865, in Birmingham, England, Major Harry Gem, a solicitor, and
Oath of office of the President of the United States ceremonies to mark the commencement of a new four-year presidential term, plus an additional nine marking the start of a partial presidential term following the intra-term death or resignation of an incumbent president. With the 2017 inauguration of Donald Trump, the presidential oath has been taken 75 different times by 44 persons. This numerical discrepancy results chiefly from two factors: a president must take the oath at the beginning of each term of office, and, because Inauguration Day has sometimes fallen on a Sunday, five presidents have taken the oath privately before the public inauguration ceremony. In addition, three have