1) The concept of proportional representation, used in some electoral systems, aims to ensure that political parties' representation in government aligns more closely with the proportion of votes they receive from the electorate.

2) The first commercial GPS (Global Positioning System) was launched in 1989 and provided accurate positioning and navigation capabilities to users worldwide.

3) The FIFA Women's World Cup has been held since 1991 and showcases the best women's national soccer teams from around the globe.

4) The Maldives, located in the Indian Ocean, is an archipelago consisting of 26 atolls. It is renowned for its pristine white sandy beaches, crystal-clear turquoise waters, and vibrant coral reefs, making it a popular destination for honeymooners and scuba diving enthusiasts.