Here's a very interesting map that I found recently through International Justice Mission, one of the groups at the forefront of the battle against modern-day slavery of all kinds.
Essentially the map breaks down the countries where trafficking is most prevalent, and which countries are doing the most to combat slavery within their own country. Here's how the different tiers work:
Tier 1 (Green): Countries which fully comply with the minimum standards for eliminating human trafficking, based on the Trafficking and Violence Protection Act (TVPA) analysis
Tier 2 (Tan): Countries that don't comply with the minimum standards, but are making progress.
Tier 2 Watch list (Yellow): Countries that fall under the Tier 2 status, but still have an increasing number of trafficking victims, or don't provide sufficient evidence of taking care of the problem.
Tier 3 (Red): Countries which don't meet minimum standards, and are not making significant efforts to do so.
Special Cases (Gray): Countries that have suffered severe conflict or natural disasters: Somalia, Sierra Leone, and Haiti are the only qualifiers.

Here's a link to the website with all the data if you want to look into this information with more depth.
http://www.guardian.co.uk/news/datablog/2011/jun/27/human-trafficking-us-state-department
For a quick breakdown of the countries R Squad will be visiting:
Ireland: Tier 1
Romania: Tier 2
Ukraine: Tier 2
India: Tier 2
Nepal: Tier 2
Mozambique: Tier 2
Swaziland: Tier 2
South Africa: Tier 2
Thailand: Tier 2 Watch llist
Cambodia: Tier 2
Taiwan: Tier 1
The good news is that there are more Tier 2 countries than Tier 3. However, the Tier 2's also far outnumber the Tier 1 countries; though it's encouraging to see how many countries are making efforts to combat trafficking.
Here's a list of all 23 Tier 3 nations:
Algeria, Burma, Central African Republic, Democratic Republic of the Congo, Cuba, Equitorial Guinea, Eritrea, Guinea-Bissau, Iran, North Korea, Kuwait, Lebanon, Libya, Madagascar, Mauritania, Micronesia, Papua New Guinea, Saudi Arabia, Sudan, Turkmenistan, Venezuela, Yemen, Zimbabwe
