Answer: rocks weathered due to the effect of water.
Explanation: Placer deposits forms when rocks weathered due to the effect of water. The heavy minerals from the rocks get settled down in water. Minerals that form placer deposits have high specific gravity, they are resistant to chemical weathering process and are durable.
Answer:Following the enlightenment many Europeans began to support the ideas of “divine right” and absolute rule
Clean water
rivers power the mills
and rivers provided water for production
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.