The prohibition of agreements of Union security between companies and unions through the right to work laws affected the union membership, these laws do not provide a general guarantee of employment to people seeking work, contractual agreements between employers and employees of stable unions, require as a condition of employment that workers must pay the fees or tariffs otherwise it could be up to you to demand your membership if you have not paid the costs of the syndical representation.
The Europeans began to colonize those regions and territories which are rich in resources because they need raw material for their factories to make the final product and sell those final products in new markets.
This led to Globalization and world economic connectivity, It led to the worldwide pollution and other sorts of disease especially cancer and global warming.