in 1993 the single market is completed with the 'four freedoms' of: movement of goods, services, people and money. the 1990s is also the decade of two treaties, the 'maastricht' treaty on european union in 1993 and the treaty of amsterdam in 1999.

How would the previous sentence be correctly capitalized?
In 1993 the Single Market is completed with the 'four freedoms' of: movement of goods, services, people and money. The 1990s is also the decade of two treaties, the 'Maastricht' Treaty on European Union in 1993 and the Treaty of Amsterdam in 1999.