2a+ay+2b+by
basically it's just multiplying them together
Jesus referred to himself as the rock, upon the creation of Christianity. This ended the prosecutions of Christians in the Roman Empire and declared Christianity one of the religions approved by their own emporer.
Lincoln issued the first Emancipation Proclamation shortly after the Battle of Antietam. It would take effect January 1, 1863.
This did not effect any European power from formal recognition. least of all the world's most powerful empire with millions of "Native Peoples " under their control. One can call it forced labor. The British had already given the Confederacy "de facto " recognition as it had a constitution, a government and an army.
Its the laws that make us free, it is what makes us do what we do today.