How has the 1985 Schengen Treaty affected migration flows in Europe?
(1 point)
• The treaty was a response to security concerns raised by significant migration that overwhelmed some countries.
• The treaty significantly increased the number of refugees who migrated to Europe in the 1990s.
• The treaty made migration among European countries more open, and many moved seeking economic opportunity.
• The treaty established quotas for migration to ensure that Palestinian refugees were evenly distributed throughout Europe.
• The treaty created strict controls on migration, which were reversed in response to the humanitarian crises of the mid-1990s,