Which of the following changes happened to slavery because of the war

It appears that part of your question is missing. However, I assume you are referring to the American Civil War. If so, the following changes happened to slavery as a result of the war:

1. The Emancipation Proclamation: In 1863, President Abraham Lincoln issued the Emancipation Proclamation, which declared that all slaves in Confederate territory were to be set free. This proclamation did not immediately free all slaves, as it only applied to Confederate-held areas that were under Union control. Nonetheless, it marked a significant step towards the abolition of slavery.

2. The 13th Amendment: In 1865, following the end of the Civil War, the 13th Amendment to the United States Constitution was ratified. This amendment abolished slavery and involuntary servitude, making it illegal in the entire country. This constitutional amendment permanently ended the institution of slavery.

3. The Freedmen's Bureau: In 1865, the United States government established the Bureau of Refugees, Freedmen, and Abandoned Lands, commonly known as the Freedmen's Bureau. This agency aimed to provide assistance, including education, healthcare, and employment opportunities, to newly freed slaves and other displaced persons in the South.

4. Black Codes and Segregation: While the abolition of slavery was a significant victory, it did not eradicate racial discrimination. After the Civil War, Southern states enacted Black Codes, which aimed to maintain control over the newly freed African Americans and restrict their rights. These codes led to the establishment of segregation and the denial of civil rights to African Americans for many years to come.

5. Long-Term Effects: The Civil War and its aftermath had profound and lasting effects on race relations in the United States. Though slavery was legally abolished, African Americans faced numerous challenges, including discrimination, violence, and unequal treatment, which persisted for generations. The fight for equality and civil rights would continue long after the war ended.