Nominees for the presidency of the two major parties are chosen by delegates at national conventions. How these delegates are chosen varies across states and between the political parties.

Explanation:

A primary election (primary nomination), or simply primary, is an election in which voters under a jurisdiction select the candidate that a party will present to a subsequent public election. In other words, it is a democratic way to pre-select the candidate that a party will present to a particular electoral process. The "Primary" are more common in the United States, not only for presidential elections but also to choose candidates for representatives, senators, mayors and governors, among others and their origins date back to the progressive movement. The first party to carry them out was the Progressive Party, by Theodore Roosevelt, and was followed by the Democratic and Republican parties. Even the minority Communist Party of the USA. UU. He accepted the regime of the primaries, obtaining a positive vote of six voters in 1948 in Massachusetts. There, the primary elections are held by the government on behalf of the parties [citation needed]. In the rest of the world, the nomination of presidential candidates is generally the responsibility of political parties and organizations and does not include the general public.

In addition to the primaries, another of the ways to select a candidate is caucuses or assemblies, conventions, and nominations at meetings. Historically, the political parties of Canada to their candidates in the meetings of the parties in each constituency. The leaders of Canada are elected in leadership conventions, although some parties have abandoned this practice in favor of a militant system, a vote.

answer; /// slavery should be outlawed in the new country, was part of the initial draft of the declaration of independence, but not part of the final

the underground railroad (apocope of the metropolitan railroad) is a system of urban trains located within a city and its metropolitan area. it is characterized for being a massive transport of passengers in the big cities, uniting diverse zones and their environs, with high capacity and frequency and in segregated form to other systems of transport. metropolitan railroads are built underground or on the surface, although most systems use mixed models where sections are combined in both modalities.

1 - as a result, the metro tends to reduce car travel for two reasons: first, due to the greater transfer of users from the car and, second, due to the reduction in the acquisition of cars in homes located in sectors near the stations of the metro.

2 -the metro allows to contribute effectively to the achievement of all the objectives of an urban development policy: it improves the efficiency of the city's economy by reducing travel costs and also generates a higher level of activities in the city center, taking advantage of of the agglomeration economies.

3 -it is a clean means of transport, since it uses renewable energy (usually electricity), taking care of the environment and avoiding excessive pollution.