Historians use primary sources like diaries, letters, speeches. And secondary sources like articles.
Answer:
architecture and cleanliness
Explanation:
Answer: Under the Reagan administration, U.S. support for the Afghan mujahideen evolved into a centerpiece of U.S. foreign policy, called the Reagan Doctrine, in which the U.S. provided military and other support to anti-communist resistance movements in Afghanistan, Angola, and Nicaragua.
Explanation:
Answer: Great Compromise
Explanation: Their so-called Great Compromise (or Connecticut Compromise in honor of its architects, Connecticut delegates Roger Sherman and Oliver Ellsworth) provided a dual system of congressional representation. In the House of Representatives each state would be assigned a number of seats in proportion to its population.