Recent reports show the persistence of child marriage in these countries, enabled by laws and institutions. Why does this remain an issue?
UNHCR said Yemen's health care system "has in effect collapsed", with the virus thought to be spreading throughout the country, and appealed for urgent funding last week.
There are over 5,000 cases of adults petitioning on behalf of minors and nearly 3,000 examples of minors seeking to bring in older spouses or fiances, shows a data requested by the Senate Homeland Security Committee.
Mobile phone access across the country has brought young boys and girls closer to each other, and due to social pressures the underage dating quickly translates into teenage marriage and pregnancy.
The United Nations children's agency reports a significant drop in the number of child marriages worldwide. Unicef estimates 25 million child marriages have been prevented in the past decade.
The government of the South Asian nation is considering a proposal to change marriage law as there is no minimum age for Muslims to marry under the current law.
Tanzania's current law allows girls as young as 14 to get married if their parents are supportive of the arrangement.
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