[Q]: What is the answer for the question: What event took place that disrupted Portland's economy in 1980? from the following article ? As early as 1881, industrialists proposed altering the natural channel of the Columbia to improve navigation. Changes to the river over the years have included the construction of jetties at the river's mouth, dredging, and the construction of canals and navigation locks. Today, ocean freighters can travel upriver as far as Portland and Vancouver, and barges can reach as far inland as Lewiston, Idaho.The shifting Columbia Bar makes passage between the river and the Pacific Ocean difficult and dangerous, and numerous rapids along the river hinder navigation. Pacific Graveyard, a 1964 book by James A. Gibbs, describes the many shipwrecks near the mouth of the Columbia. Jetties, first constructed in 1886, extend the river's channel into the ocean. Strong currents and the shifting sandbar remain a threat to ships entering the river and necessitate continuous maintenance of the jetties. In 1891 the Columbia was dredged to enhance shipping. The channel between the ocean and Portland and Vancouver was deepened from 17 feet (5.2 m) to 25 feet (7.6 m). The Columbian called for the channel to be deepened to 40 feet (12 m) as early as 1905, but that depth was not attained until 1976.Cascade Locks and Canal were first constructed in 1896 around the Cascades Rapids, enabling boats to travel safely through the Columbia River Gorge. The Celilo Canal, bypassing Celilo Falls, opened to river traffic in 1915. In the mid-20th century, the construction of dams along the length of the river submerged the rapids beneath a series of reservoirs. An extensive system of locks allowed ships and barges to pass easily from one reservoir to the next. A navigation channel reaching to Lewiston, Idaho, along the Columbia and Snake rivers, was completed in 1975. Among the main commodities are wheat and other grains, mainly for export. As of 2016, the Columbia ranked third, behind the Mississippi and Parana rivers, among the world's largest export corridors for grain.The 1980 eruption of Mount St. Helens caused mudslides in the area, which...
****
[A]: eruption of Mount St. Helens

[Q]: What is the answer for the question: What is the first name of the person who received Solti? from the following article ? After graduating from the Academy in 1930 Solti was appointed to the staff of the Hungarian State Opera. He found that working as a repetiteur, coaching singers in their roles and playing at rehearsals, was a more fruitful preparation than Unger's classes for his intended career as a conductor. In 1932 he went to Karlsruhe in Germany as assistant to Josef Krips, but within a year, Krips, anticipating the imminent rise to power of Hitler and the Nazis, insisted that Solti should go home to Budapest, where at that time Jews were not in danger. Other Jewish and anti-Nazi musicians also left Germany for Budapest. Among other musical exiles with whom Solti worked there were Otto Klemperer, Fritz Busch, and Kleiber. Before Austria fell under Nazi control, Solti was assistant to Arturo Toscanini at the 1937 Salzburg Festival: Toscanini was the first great musical impression in my life. Before I heard him live in 1936, I had never heard a great opera conductor, not in Budapest, and it was like a lightning flash. I heard his Falstaff in 1936 and the impact was unbelievable. It was the first time I heard an ensemble singing absolutely precisely. It was fantastic. Then I never expected to meet Toscanini. It was a chance in a million. I had a letter of recommendation from the director of the Budapest Opera to the president of the Salzburg Festival. He received me and said: "Do you know Magic Flute, because we have an influenza epidemic and two of our repetiteurs are ill? Could you play this afternoon for the stage rehearsals?"
****
[A]: Arturo

[Q]: What is the answer for the question: What is the precise last name of the family whose gift recipient was the National Trust? from the following article ? Belton House is a Grade I listed country house in Belton near Grantham, Lincolnshire, England. The mansion is surrounded by formal gardens and a series of avenues leading to follies within a larger wooded park. Belton has been described as a compilation of all that is finest of Carolean architecture, the only truly vernacular style of architecture that England had produced since the Tudor period. The house has also been described as the most complete example of a typical English country house; the claim has even been made that Belton's principal facade was the inspiration for the modern British motorway signs which give directions to stately homes. Only Brympton d'Evercy has been similarly lauded as the perfect English country house.For three hundred years, Belton House was the seat of the Brownlow and Cust family, who had first acquired land in the area in the late 16th century. Between 1685 and 1688 Sir John Brownlow and his wife had the present mansion built. Despite great wealth they chose to build a modest country house rather than a grand contemporary Baroque palace. The contemporary, if provincial, Carolean style was the selected choice of design. However, the new house was fitted with the latest innovations such as sash windows for the principal rooms, and more importantly, completely separate areas for the staff. As the Brownlows rose from baronets to barons upward to earls and then once again became barons, successive generations made changes to the interior of the house which reflected their changing social position and tastes, yet the fabric and design of the house changed little. Following World War I (a period when the Machine Gun Corps was based in the park, as referred to in Henry Williamson's Chronicle of Ancient Sunlight), the Brownlows, like many of their peers, were faced with mounting financial problems. In 1984 they gave the house awaycomplete with most of its contents. The recipients of their gift, the National Trust, today fully open Belton to the public. It is in a good state of...
****
[A]:
Brownlow