30 states have passed the right
Answer: C : creating OSHA to help...
Explanation:
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International trade enables specialization, which brings increased efficiency and greater competition to spur the market.
This happens because Specialization would make each nation to focus on producing certain type of products in which they would gain a competitive advantage towards other (either because they had the necessary materials sources or labor qualities) and would create better and cheaper product in the market.
Europeans were originally motivated to explore the seas to discover previously unknown lands, especially after the contact with America, where europeans found all kind of valuable goods. The portuguese were the first to pursue maritime exploration, soon to be followed by the spaniards.
During the 1950s, an increase in the number of marriages and births fueled a demand for housing.
People who was born in the 1950s were known as the baby boomers. The increasing number of marrieages and births in population of post-World War II led to an increase in the demand for housing and gave rise to higher density cities.
By the 1970s, the United States economy had grown by leaps and bounds and was by far the largest economy in the world.