QUES: In the former Soviet Union, electric traction eventually became somewhat more energy-efficient than diesel. Partly due to inefficient generation of electricity in the USSR (only 20.8% thermal efficiency in 1950 vs. 36.2% in 1975), in 1950 diesel traction was about twice as energy efficient as electric traction (in terms of net tonne-km of freight per kg of fuel). But as efficiency of electricity generation (and thus of electric traction) improved, by about 1965 electric railways became more efficient than diesel. After the mid 1970s electrics used about 25% less fuel per ton-km. However diesels were mainly used on single track lines with a fair amount of traffic so that the lower fuel consumption of electrics may be in part due to better operating conditions on electrified lines (such as double tracking) rather than inherent energy efficiency. Nevertheless, the cost of diesel fuel was about 1.5 times more (per unit of heat energy content) than that of the fuel used in electric power plants (that generated electricity), thus making electric railways even more energy-cost effective.
When was diesel traction three times as efficient as electric traction?

ANS: unanswerable

QUES: The brief peace in Europe allowed Napoleon to focus on the French colonies abroad. Saint-Domingue had managed to acquire a high level of political autonomy during the Revolutionary Wars, with Toussaint Louverture installing himself as de facto dictator by 1801. Napoleon saw his chance to recuperate the formerly wealthy colony when he signed the Treaty of Amiens. During the Revolution, the National Convention voted to abolish slavery in February 1794. Under the terms of Amiens, however, Napoleon agreed to appease British demands by not abolishing slavery in any colonies where the 1794 decree had never been implemented. The resulting Law of 20 May never applied to colonies like Guadeloupe or Guyane, even though rogue generals and other officials used the pretext of peace as an opportunity to reinstate slavery in some of these places. The Law of 20 May officially restored the slave trade to the Caribbean colonies, not slavery itself. Napoleon sent an expedition under General Leclerc designed to reassert control over Sainte-Domingue. Although the French managed to capture Toussaint Louverture, the expedition failed when high rates of disease crippled the French army. In May 1803, the last 8000 French troops left the island and the slaves proclaimed an independent republic that they called Haiti in 1804. Seeing the failure of his colonial efforts, Napoleon decided in 1803 to sell the Louisiana Territory to the United States, instantly doubling the size of the U.S. The selling price in the Louisiana Purchase was less than three cents per acre, a total of $15 million.
What was the name of the French general who led the forces that attempted to regain control of Sainte-Domingue?

ANS: Leclerc

QUES: There were even Verdingkinder auctions where children were handed over to the farmer asking the least amount of money from the authorities, thus securing cheap labour for his farm and relieving the authority from the financial burden of looking after the children. In the 1930s 20% of all agricultural labourers in the Canton of Bern were children below the age of 15. Swiss municipality guardianship authorities acted so, commonly tolerated by federal authorities, to the 1960s, not all of them of course, but usually communities affected of low taxes in some Swiss cantons Swiss historian Marco Leuenberger investigated, that in 1930 there were some 35,000 indentured children, and between 1920 and 1970 more than 100,000 are believed to have been placed with families or homes. 10,000 Verdingkinder are still alive. Therefore, the so-called Wiedergutmachungsinitiative was started in April 2014. In April 2014 the collection of targeted at least authenticated 100,000 signatures of Swiss citizens has started, and still have to be collected to October 2015.
What happened at Verdingkinder auctions?

ANS: children were handed over to the farmer asking the least amount of money

QUES: Black labor played a crucial role in Miami's early development. During the beginning of the 20th century, migrants from the Bahamas and African-Americans constituted 40 percent of the city's population. Whatever their role in the city's growth, their community's growth was limited to a small space. When landlords began to rent homes to African-Americans in neighborhoods close to Avenue J (what would later become NW Fifth Avenue), a gang of white man with torches visited the renting families and warned them to move or be bombed.
What was NW Fifth Avenue previously called?

ANS:
Avenue J