Why did the secondary sector decline in the 1980?

The decline of the secondary sector in the 1980s, particularly in developed countries, was primarily due to the shift towards globalization and the rise of the service sector. Many manufacturing jobs moved overseas in search of cheaper labor and production costs, leading to deindustrialization in regions heavily reliant on manufacturing. Additionally, advancements in technology and automation reduced the need for manual labor in production processes, further contributing to the decline in the secondary sector.