Who is the very first girl president

Need on these last 2 questions on my social studies homework 5 and 6 then i’m done with the homework

Why did siddhartha gautama leave home at age 30? a. to find answers to his questions about human life b. to establish a religion that was better than hinduism c. to those who felt pain and suffering in life d. to spread his new religious ideas to other people

Why did european nations face financial challenges after world war 1?