Alma Ch23

This is the proclamation that the king of the Lamanites sent out after he was taught and converted by Aaron and his brethren. It is stating that everyone is now free to worship how they please and this alone helps bring to pass many Lamanites being converted and become freed from the curse that was upon the seed of Laman and Lemuel. There are still many who rejected the teachings of the truth of God, mostly among the Amalekites and Amulonites, and this will cause tension later.
In the proclamation, the sons of Mosiah and all that traveled with them were protected wherever they might end up in their time preaching to the whole of the Lamanite (v1). They had definitely been through their fair share of trials so far and now they are given free access to anywhere among the Lamanites by pardon of the king to preach and convert people with the word of God (v2-3). After this decree was sent, the missionaries went from city to city converting, preaching, establishing churches, and having great success because of their reference from the king (v4).
Thousands were brought to the truth and began to know of the traditions of the Nephites and the scriptures, and once they were converted they never again fell away from the church (v5-6). These people were ready to hear the truth and after they did, they were completely converted and became a peaceful people (v7). They consisted of everyone in Ishmael that Ammon converted, the people in Middoni, the people in the capital city of Nephi, also the cities of Shilom, Shemlon, Lemuel, and Shimnilom (v8-12). All the people within those cities that converted laid down their weapons of war for peace and righteousness (v13).
The places that the Amalekites and Amulonites were told a different story because they worked hard to harden the hearts of the Lamanites and prevent them from accepting the truth (v14). All the people who converted no longer wanted to be called Lamanites because of the bad rep they had for their wickedness and the fact that there were still those who were wicked called Lamanites (v15-16). The converts united under the name Anti-Nephi-Lehi, and as a whole began to be industrious because they were friendly with the Nephites (v17-18). They even had the curse that had been upon them lifted, and they were loved by God.