Question

How did american companies contribute to the influx of puerto rican migrants by the hundreds of thousands beginning in the 1950s?

Answer 1

U.S. factory owners and employment agencies had begun recruiting heavily on Puerto Rico.

After 1945, economic changes transformed Puerto Rico's economy from a monocultural plantation economy into a platform for export-production in factories through what was called Operation Bootstrap. By the 1950s a growing unemployment problem left thousands of Puerto Ricans in need of a fresh start on American companies.