In 1978, Leach Walesa led a worker's strike in Poland.
Answer: Early civilizations relied heavily on trade since they couldn't create all of the materials they required or desired. Long-distance trade arose to provide peoples with the raw resources they need as well as the luxury items they desired.
Explanation: I am taking advanced history classes (regents) in middle school, i know all of this:)
Mansa Musa divided his empire into provinces and with each province he had a 100% well trusted governor for them. He also had one of the largest armies back then in the known world to protect his citizens and empire.
Answer: submarine attacks
Context/detail:
Public outrage in the US against the Germans swept the nation following the sinking of the British ocean liner, Lusitania. When a German U-boat (submarine) sank the Lusitania in May, 1915, over 1,000 persons were killed, including more than 100 Americans. The passenger liner was targeted by the Germans because they suspected weapons were being shipped to Britain in the cargo hold of the ship.
Germany managed to stave off American entry into the war at the time by pledging to stop submarine attacks. But a couple years later they resumed such attacks, and there was also an intercepted telegram that showed Germany was trying to secure Mexico as an ally against the United States. In 1917, the US declared war on Germany in response.