The knights of labor and the american federation of labor developed in response to the
a
increased need to protect worker interests
b decreased power of political machines
cincreased demand for skilled workers
d decreased profitability of the agricultural sector

The Knights of Labor and the American Federation of Labor developed in response to the increased need to protect worker interests .

Explanation:

During the period of industrialisation there was widespread exploitation of labour force in America. The workers were working in the worst condition and their wages are not adequate to the hours of work they put in.

And employment of child labour was also in practice during this period. So to protect the employees from this unfair practices first American labour union was started in the year 1869 and the name of the union is Knights of Labour established by its first leader Uriah Smith Stephens.

In the subsequent year another labour federation called American Federation of Labour was established in 1886, at Ohio, Columbus. Both the federation fought for the welfare of American workers.

answer: a parliamentary system is a system of democratic governance of a state where the executive derives its democratic legitimacy from its ability to command the confidence of the legislature, typically a parliament, and is also held accountable to that parliament. in a parliamentary system, the head of state is usually a person distinct from the head of government. this is in contrast to a presidential system, where the head of state often is also the head of government and, most importantly, the executive does not derive its democratic legitimacy from the legislature.

countries with parliamentary democracies may be constitutional monarchies, where a monarch is the head of state while the head of government is almost always a member of parliament (such as the united kingdom, denmark, sweden, and japan), or parliamentary republics, where a mostly ceremonial president is the head of state while the head of government is regularly from the legislature (such as ireland, germany, india, and italy). in a few parliamentary republics, such as botswana, south africa, and suriname, among some others, the head of government is also head of state, but is elected by and is answerable to parliament. in bicameral parliaments, the head of government is generally, though not always, a member of the lower house.

parliamentarianism is the dominant form of government in europe, with 32 of its 50 sovereign states being parliamentarian. it is also common in the caribbean, being the form of government of 10 of its 13 island states, and in oceania. elsewhere in the world, parliamentary countries are less common, but they are distributed through all continents, most often in former colonies of the british empire that subscribe to a particular brand of parliamentarianism known as the westminster system.

explanation:

true

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