The creation of SONAR - Sound Navigation and Ranging - was developed during the 1930's and allowed for the collection of expansive undersea data and the creation of nautical charting.
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Even though Great Britian defeated France and its allies, the victory came at great cost. In January 1763, Great Britain's national debt was more than 122 million pounds [the British monetary unit], an enormous sum for the time. Interest on the debt was more than 4.4 million pounds a year.
Before 1750, the traditional 'start date' for the Industrial revolution, paper money and commercial bills were used in England, but gold and silver were preferred for major transactions and copper for daily trading. There were three tiers of banks already in existence, but only in limited numbers.
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It takes a long time to break down a big rock like a boulder ,into the tiny rocks we call sand .Water and wind help to break down rocks into smaller pieces.Ocean wave washing over rocks cause them to bang together and break down into smaller stones. hope it helps you!
They changed by idk just guess C because when in doubt go with C