The correct chronological order is as follows:
• Chadwick Sanitary Reforms: Introduced in the mid-19th century to improve public health and sanitation.
• Alma Ata Declaration: Adopted in 1978, emphasizing primary healthcare as essential for health for all.
• Millennium Development Goals (MDGs): Launched in 2000 to address global development challenges.
• Sustainable Development Goals (SDGs): Adopted in 2015, succeeding the MDGs with a broader framework for global development.
This sequence reflects the progression of public health and global development priorities.