Final answer:
The statement that the UN Millennium Development Goal of reducing extreme global poverty by 50% was not successful is false. The global poverty rate decreased significantly from about 35% in 1990 to roughly 10% in 2017, indicating substantial progress.
Step-by-step explanation:
The United Nations Millennium Development Goal of reducing extreme global poverty by 50% was, in fact, quite successful in terms of the trends observed over the years. The global poverty rate, which defines the percentage of people living on less than $1.90 a day, decreased dramatically from about 35 percent in 1990 to about 10 percent in 2017. Hence, the statement that the goal was not successful is false.
Through the concerted efforts of the UN and other international organizations, billions have been lifted out of poverty, and while the goal was ambitious, significant strides were made. The data shows that from nearly 2 billion people living below the poverty line in 1990, the number decreased to approximately 689 million by 2017.