Answer: In the nineteenth century, the Oregon country was a disputed region of the Pacific Northwest of North America.
Explanation:
Hope it helps
Answer: Columbus (to the Caribean, late 15th century), Cabot (North America, New Foundland), Vasco da Gama (early 16th century, along to the coast to west Africa to the southern hemispere and Cape of the Good Hope), Pizzaro was "conquistador" who explored and conquered Peru (Inka empire, western part of the South America).
Explanation: Columbus was Italian in the service of Spanish crown, Cabot was Italian as well in the service of English crown, Vasco da Gama was Portuguese in the service of Portuguese crown, Pizzaro was Spaniard in the service of Spanish crown.
I believe it was a trial upon Ethel and Julius Rosenberg. The couple were accused of selling nuclear secrets to the Russians, but treason could not be held since the U.S was not at war with the Soviet Union.
Britain entered World War I in 1914 to honor a treaty that promised to defend Belgium and to fulfill an alliance with France and Russia. The Germans attacked Liege, Belgium, in the first battle of World War I, and then marched on to attack France.
I'm assuming by "war" you mean World War I