Over what main issue did the women’s suffrage movement split in 1869? How and when was that split resolved?

The women's suffrage movement split over the issue of strategies and tactics for achieving universal suffrage for women in 1869. Led by Susan B. Anthony and Elizabeth Cady Stanton, the National Woman Suffrage Association (NWSA) argued for a federal amendment that would guarantee the right to vote for women, while Lucy Stone and other leaders of the American Woman Suffrage Association (AWSA) sought to extend the right to vote to women through state-by-state campaigns. The split between the two groups was resolved in 1890 with the formation of the National American Woman Suffrage Association (NAWSA) as a unified organization. The AWSA and the NWSA merged to become the NAWSA under the leadership of Stanton and Stone, and Anthony agreed to join the association after several years of disagreement. The two sides agreed to focus on both constitutional and state-level appeals to achieve an extension of suffrage rights to women.