I think the most significant cause of World War one was the assassination of the Archduke Franz Ferdinand. The other causes of the war was Imperliasm, Militarism, Nationalism and Alliances that were formed.
The USSR, they launched a satellite in to space called Sputnik in the 1950's
Public health
Sanitation standards were created to protect the common good in particular in cities.
During the Second Industrial Revolution, many began moving to the cities. Overcrowding of people and horses created large amounts of waste and very little clean water. Disease ran rampant and sanitation systems were put into place to protect the health of people.
Answer:
What are interstate compacts, and what part is played by the national government in these agreements? They are written agreements to settle disputes between two or more states.
i think it is the second one
