You have been hired as a financial consultant by a Tanzanian family looking to diversify their investment portfolio. The family has a range of financial goals, including wealth preservation, income generation, and capital appreciation. Develop a customized investment plan tailored to the family's objectives and risk profile, using the following scenario:

I. Construct a hypothetical investment portfolio comprising a mix of financial and physical assets based on the family's preferences and risk tolerance.

II$.$ Justify your asset allocation strategy considering the family's investment goals and market conditions.

III. Outline the steps the family should take to implement and monitor their investment plan effectively.

IV$.$ Provide recommendations for reviewing and adjusting the portfolio over time.

V$.$ Discuss the economic and regulatory landscape in Tanzania and its potential impact on the family's investment portfolio.

VI$.$ Assess the risks and opportunities associated with investing in Tanzania compared to international markets.