Diabase → Labor history of the United States, Cycle ball

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  DiabaseDiabase, also called dolerite or microgabbro, is a mafic, holocrystalline, subvolcanic rock chemically equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grained to aphanitic chilled margins which may contain tachylite. Diabase is the preferred name in North America, while dolerite is the preferred name in the rest of the English-speaking world, where sometimes the name diabase refers to altered dolerites and basalts. Some geologists prefer to avoid confusion by using the name microgabbro.
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  Labor history of the United StatesThe nature and power of organized labor in the United States is the outcome of historical tensions among counter-acting forces involving workplace rights, wages, working hours, political expression, labor laws, and other working conditions. Organized unions and their umbrella labor federations such as the AFL–CIO and citywide federations have competed, evolved, merged, and split against a backdrop of changing values and priorities, and periodic federal government intervention. In most industrial nations, the labor movement sponsored its own political parties, with the US as a conspicuous exception. Both major American parties vied for union votes, with the Democratic Party usually much more successful. Labor unions became a central element of the New Deal coalition that dominated national politics from the 1930s into the mid-1960s during the Fifth Party System. Liberal Republicans who supported unions in the Northeast lost power after 1964. In recent decades, an enduring alliance was formed between labor unions and the Democrats, whereas the Republican Party has become hostile to unions and collective bargaining rights. The history of organized labor has been a specialty of scholars since the 1890s, and has produced a large amount of scholarly literature focused on the structure of organized unions. In the 1960s, the sub-field of new labor history that emerged as social history was gaining popularity broadly, with a new emphasis on the history of workers, including unorganized workers, and their gender and race. Much scholarship has attempted to bring the social history perspectives into the study of organized labor. By most measures, the strength of organized labor has declined in the United States over recent decades.
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  Cycle ballCycle-ball, also known as "radball", is a sport similar to association football played on bicycles. The two people on each team ride a fixed-gear bicycle with no brakes or freewheel. The ball is controlled by the bike and the head, except when defending the goal.

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