Answer:
1. Global migrations occurred in the 1750-1900 time period due to various reasons such as economic opportunities, religious persecution, political instability, wars, and natural disasters.
2. Industrialization played a significant role in increased migrations during this time period. As industrialization led to the growth of factories and manufacturing industries, there was a need for more labor. This led to the migration of people from rural areas to urban centers in search of work.
3. Environmental factors such as droughts, floods, famines, and other natural disasters also played a role in increased migrations during this time period. These environmental factors often led to crop failures and food shortages, which forced people to migrate to other areas in search of food and better living conditions.
4. Global capitalism also played a significant role in increased migrations during this time period. The growth of capitalist economies and the search for new markets and resources led to colonization and imperialism. This, in turn, led to the forced migration of people from colonized territories to other parts of the world as laborers or slaves. Additionally, the growth of international trade and commerce led to the migration of skilled laborers and entrepreneurs in search of economic opportunities in other countries.