There were changes in european and U.S migrations around the world. Before, the irish population remained in Ireland
developing culture, but that eventually changed to their migrations to the U.S. This migration was cause by a severe potato famine, seeking a better life with a more constant food supply. Many people migrated to the U.S. Secondly, at first the British had many colonies without many of their own people in them, but that changed to the british sending captives to Australia and New Zealand to begin a penal colony. The irish respond to their famine and poverty by revolutionizing instead of migrating. Unlike the rest of the world, the U.S received many migrators rather than provided many. Firstly, in the beginning of this time period, the U.S accepted many slave migrations to work on the plantations of sugar, cotton, and tobacco, but that changed to the use of indentured servants who came not just from west africa, but from east and south east asia. The outlaw of the slave trade was caused by the british who decided that it should be ended for economic reasons and who spent just as much money as they earned from the profits of the slave trade to stop it in the atlantic ocean. Also in the U.S, at first they accepted and welcomed many foreign migrants, but that changed to not allowing certain people to migrate there by passing acts, such as the Chinese exclusion act. This type of act is similar to how china, in its days of isolation, kept out and restricted any foreign interference and interaction.
There were many continuities over this time period in both europe and the U.S. FIrst, the main reason people migrate is for economic reasons and that remained throughout the time period. Even the australian penal colonies had this incentive as Britain did not want to have to use tax money to hold and secure prisoners. Secondly, the migrants bring culture with them which causes syncretism such as the creation of the vodun religion in african slaves. Thirdly, world migrations in both the U.S and europe at this time caused widespread disease, such as the smallpox epidemic. The Africans especially had to acclimate to a new world in the U.S. Also, the U.S and the europeans had to worry about diseases like HIV and malaria when in africa. Finally, there was and remained throughout the period, a constant flow of migrants into the U.S no matter where they came from in the world. Another continuity is the flow of people from europe to africa. At this time, europe is still heavily imperialistic, especially in africa because it has gone unconquered by a colonial force. European economic interest in african goods caused this continuous through relatively small, migration of europeans to america to govern colonies, connect and sell goods as merchants, and even step up colonies who enjoy extraterritoriality. Colonies such as british, south africa, and france are examples of this.
Throughout the time period of the 1700 through 1900, many changes and continuities occurred. The irish population remained in ireland developing culture, eventually changing to the U.S, Europeans migrating to the americas, and the migration of the slave trade. All migrations contributed both positive and negative factors to what our world is today.