Read the paragraph and underline the correct word in the parentheses.

Many people have heard of the Bill & Melinda Gates Foundation, but few know $($its$,$ it's$)$ history or $($its$,$ their$)$ purposes. In $1975,$ Bill Gates and Paul Allen founded Microsoft, which was nothing more than two very smart men and $($his$,$ their$)$ ideas. By $1986,$ Microsoft had gone public and Gates was a billionaire. In $1994,($he$,$ him$)$ created the William H$.$ Gates Foundation that focused on health issues around the world. In $1997,($he$,$ him$)$ and $($his$,$ his'$)$ wife, Melinda, created the Gates Library Foundation to help fund libraries and help provide free Internet access to Americans through library access. In $1999,($they$,$ them$)$ renamed the Gates Library Foundation; it became known as the Gates Learning Foundation. $($This$,$ These$)$ broadened $($its$,$ it's$)$ focus to incicte initiatives for helping low$-$income students prepare and pay for college. In $2900,$ the William H$.$ Gates Foundation and the Gates Learning Foundatio: merged to become the Bill & Melinda Gates Foundation. Since $1994,$ the foundation has provided funds of more than three billion dollars through $($its$,$ their$)$ Global Development Program to help create sustainable solutions in poser countries. Some of $($these$,$ them$)$ programs are agricultural developmes financial services for the poor, and initiatives for educating about and estaishing clean water, good sanitation, and healthful hygiene. The foundation has also funded over fourteen billion dollars in its Global Health Program. $($This$,$ This here$)$ program finances initiatives that focus on saving lives in poor countries through vaccinations, neonatal and infant health care, and treatment of illnesses such as HIV$/$AIDS$,$ malaria, and tuberculosis. A third program, the United States Program, has received almost six billion dollars to continue to fund the programs started by the Gates Learning Foundation. All of $($these$,$ hose$)$ programs have had an impact on millions of lives through the founders' elief that "every life has equal value."