Explain the relationship between interest groups and legislation

An interest group is a group of people who come together and organize themselves because they have common interest. They act together to promote it and defend it. Examples of interest groups: trade unions, employers' organizations, companies, professional associations and NGOs.

The  relationship between interest groups and legislation is that interest groups put pressure on elected candidates to promote legislation that favors their causes.

How do they do that? Interest groups send representatives to state capitals and to Washington, D.C. to pressure members of Congress and other politicians. They are involved in a process to influence legislation and politics. This process is known as "Lobbying." It can take many forms and use different strategies. In the United States, interest groups can testify at Congressional Hearings. Lobbyists often contact government officials directly or informally, and present them with research results. They also communicate their findings through different media and cases are known in which they are also involved in supporting the drafting of bills. They also actively participate in political campaigns.

both include an amendment process.

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.