Answer:
ROW
Step-by-step explanation:
Given that,
UK has 50M workers and 100M units of capital.
ROW has 5B workers and 4B units of capital.
A country is labor abundant if the endowment of labor in that country relative to the other factors is greater than the other countries.
Therefore,
In UK:
= 50 workers ÷ 100M units of capital
= 0.5 workers
For every unit of capital there are 0.5 workers.
In ROW:
= 5B workers ÷ 4B units of capital
= 1.25 workers
For every unit of capital there are 1.25 workers.
Above calculations clearly shows that ROW is relatively labor abundant and UK is relatively capital abundant.