What was one change in warfare in the 18th century?

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Describe how gravity and convection work together to move the plates in the plate tectonics theory

In a market economy, what does a producer mean when it asks, "is there a market for my products? is there a place where we can sell our products? " "ls our product being made more cheaply overseas? " will consumers need and want to buy our products? " will the government support demand for our products? "

Interest groups and political action committees are both types of organizations that