Why did lincoln's election as president convince southerners that they lost their voice in the national government?

Interest groups are protected by the first amendment guarantees of petition and what other freedom?

Interest groups representing businesses and investors are often among the most successful lobbying groups for all of the following reasons, except a. such groups have the financial resources to mount sustained campaigns on their own behalf b. these groups' members contribute heavily to many legislators' campaigns and in so doing gain greater access to legislators c. these groups have often been in existence for decades, allowing them to both master the legislative system and develop close ties with legislators d. the members of these groups make up the majority of voters in many districts

In which era does vietnam war fought and what was the reason?