Did the early modern period see distinctive changes in human- environment interaction or were only minor shifts involved

What was the main point of truman doctrine ?

Match each idea to the correct principle of government. federalism separation of powers checks and balances divides the powers of government into different branches arrowright divides the powers of government between central and state governments arrowright each branch of government has certain powers that prevents the abuse of power on the people arrowright

What spurred american trade with northern mexico?