1) The world's first credit card was introduced in 1950 by Diners Club.

2) The highest-grossing concert tour of all time is U2's "360° Tour," which earned over $735 million in ticket sales.

3) The banking industry is regulated by government agencies to ensure the stability and integrity of the financial system and to protect consumers.

4) The national flower of Japan is the cherry blossom, which holds great cultural significance and is celebrated during the annual cherry blossom festivals.