The map shows the percentage of girls aged 16 or under who are married, by country. A world map titled Practice of Child Marriage for Girls. A key shows 4 categories by color. Light green = Less than 5 percent of girls are married at 16 or younger; significant barriers to/disapproval of underage marriage. Green = 5 to 10 percent of girls are married at 16 or younger; weak barriers to/disapproval of underage marriage. Dark green = Underage marriage common and encouraged; over 10 percent of girls are married at age 16 or younger. Gray = No data. Sub-Saharan Africa is mostly dark green with areas of green and light green. The Middle East is mostly dark green with a few areas of green. Southeast Asia is dark green. East Asia is green and light green. South America is mostly green with a few areas of light green.

According to this map, which region generally has the lowest rates of underage marriage for girls?

Sub-Saharan Africa
the Middle East
Southeast Asia
South America
East Asia