To help rebuild the economy of Great Britain when there weren't enough adults to have those jobs in big factory's.
Three standard units of the metric system are
Length: Meters
Volume: Liters
Mass: Grams
Earlier, many people depended on various natural resources to live. Without the scientific knowledge to explain these things, they turned to the worship of various Gods.
Article IV of the US Constitution establishes the responsibilities of the states to each other and the responsibilities of the federal government toward the states. Section 1 of Article IV requires that the states give “full faith and credit” to the public acts and judicial proceedings of every other state.