Answer:
If the Thames experienced a drought in the twenty-first century, what would most likely happen is an economic and social disaster for the United Kingdom.
Step-by-step explanation:
The Thames (the longest river in England) is home to the UK's second biggest port, which means that the activities that are carried out here contribute to the economic growth of the whole United Kingdom. These activities, including shipping (the transport of goods) and tourism, depend on workers who need their full-time jobs to live. Not only would the economy of the UK be affected but these people would also lose their jobs and this would, in consequence, lead to bigger rates of unemployment. Also, the UK would lose the income generated by the number of tourists that visit this area.