Why did soldiers join the crusade? who did the crusaders attack? was the crusade successful?

Which would make the best heading for this list of notes about the migration of african-americans during the reconstruction era?

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

Why did metternich think nationalism threatened the austrian empire?