What are the four achievements of Muslim scientist and mathematicians?

Muslim scientists and mathematicians made significant contributions, including the development of algebra, with Al-Khwarizmi often referred to as the "father of algebra." They advanced the field of optics, with Ibn al-Haytham's work laying the groundwork for modern optics and the scientific method. The introduction of the Arabic numeral system, including the concept of zero, revolutionized mathematics. Additionally, Muslim astronomers made precise observations and improved astronomical instruments, significantly enhancing navigation and our understanding of the cosmos.