Which of the following forms a theory explaining the Great Atlantic migration

A. Economic push factors in Europe resulting from crop failures
B. Economic pull factors in Europe due to industrial growth
C. Political push factors in Europe due to governmental instability
D. Environmental pull factors in the US held a desirable climate

D. Environmental pull factors in the US held a desirable climate

To determine which option forms a theory explaining the Great Atlantic migration, we need to analyze each option and see if it provides a plausible explanation. Here's a breakdown of each option and its potential relevance to the Great Atlantic migration:

A. Economic push factors in Europe resulting from crop failures: This option suggests that economic factors led to the migration, specifically due to crop failures causing financial hardship in Europe. While crop failures could potentially be a factor in migration, it does not inherently explain the Great Atlantic migration comprehensively.

B. Economic pull factors in Europe due to industrial growth: This option suggests that economic factors in Europe, particularly industrial growth, attracted individuals to migrate to the United States. Industrial growth providing job opportunities and higher wages could certainly be a significant pull factor for migration, making this option a potential explanation for the Great Atlantic migration.

C. Political push factors in Europe due to governmental instability: This option suggests that political factors, such as governmental instability in Europe, contributed to the migration. Political instability could lead individuals to seek stability elsewhere, including the United States. While this factor might have influenced some individuals, it may not explain the migration as a whole.

D. Environmental pull factors in the US held a desirable climate: This option suggests that environmental factors, particularly the desirable climate in the United States, played a role in attracting people to migrate. While climatic conditions could be a factor influencing migration decisions, it alone would not explain the scale and extent of the Great Atlantic migration.

Based on the analysis above, option B, economic pull factors in Europe due to industrial growth, seems to be the most comprehensive explanation and theory for the Great Atlantic migration.

The answer is a combination of A and D.

The theory that explains the Great Atlantic migration takes into consideration economic push factors in Europe caused by crop failures, as well as environmental pull factors in the United States due to its desirable climate. So, the correct answer is a combination of A and D.