Final answer:
The US and Britain promised to respect self-determination, avoid territorial gains, and work for international peace and security in the Atlantic Charter.
Step-by-step explanation:
The United States and Britain promised several things in the Atlantic Charter.
First, they pledged to respect the rights of all nations to self-determination.
Second, they promised not to seek territorial gains or impose their own governments on other countries.
Lastly, they committed to working towards a world free from fear and want, and promoting international peace and security.
Learn more about promises in the Atlantic Charter