Final answer:
Lawrence's family was only 1 of the thousands migrations during this time. The migration of African Americans from the South to the North played a significant role in shaping American history.
Step-by-step explanation:
The missing word in the sentence is thousands.
Lawrence's family was only 1 of the thousands migrations during this time. The concept of migration during this period is illustrated by the movement of African Americans from the South to the North, seeking freedom and better opportunities. This migration often happened in groups or with family units, and it played a significant role in shaping American history.