Answer:
The Sino-Soviet Treaty of Friendship, Alliance and Mutual Assistance
Explanation:
There was six articles and the terms lasted 30 years in force.
Answer: A. The abolitionist movement grew stronger.
<em>Dred Scott v. Sandford (1857)</em> was a landmark decision by the United States Supreme Court. It held that black people whose ancestors were imported into the U.S., whether enslaved of free, could not be American citizens. Therefore, they could not sue in federal court. Moreover, it ruled that the federal government had no power to regulate slavery in the territories acquired after the creation of the United States.
The decision was controversial, and greatly opposed by abolitionist groups. It strengthened the abolitionist movement and may have been a catalyst for the American Civil War.
Answer:
In 1488, Portuguese explorer Bartolomeu Dias (c. 1450-1500) became the first European mariner to round the southern tip of Africa, opening the way for a sea route from Europe to Asia.
Airplanes were vital for ww1 to ease transport of amo and soon guns on the planes including bombs this made it easier for to launch quick air strikes on places like bases vulnerable to air strikes
