1) The Tony Awards celebrate excellence in Broadway theater and have been awarded annually since 1947.

2) The concept of reinsurance, which is insurance for insurance companies, originated in the 17th century.

3) The Renaissance period, which began in Italy in the 14th century, marked a renewed interest in art, literature, science, and philosophy.

4) The Russian Revolution in 1917 resulted in the overthrow of the monarchy and the establishment of a communist government under Vladimir Lenin.