In regional organisations and world bodies, in which year did the East African Development Bank (EADB) officially come into force as a regional development finance institution?

Introduction / Context:
The East African Development Bank, often abbreviated as EADB, is an important regional development finance institution in Africa. Many competitive exams and general knowledge tests ask about the year in which this bank actually came into force under its own charter. This question checks awareness of regional economic institutions and how they evolved over time, which is a key component of world organisations general knowledge.

Given Data / Assumptions:

The institution is the East African Development Bank, EADB.
The question is about the year it came into force as a development bank.
Four possible years are given as options: 1967, 1980, 1982 and 1983.
We assume the question refers to the year when the bank came into force as an operational regional institution, not only the year the treaty was signed.

Concept / Approach:
To answer this question correctly, we need to distinguish between the year of formal establishment in a treaty and the year when that treaty or charter actually came into force and the institution started functioning. Many international and regional organisations have a time gap between signing a founding treaty and the charter coming into force. For the East African Development Bank, the commonly tested examination fact is the year when the bank came into force under its charter, which is the year 1980. Remembering such key dates helps in answering several world organisations questions efficiently.

Step-by-Step Solution:
Step 1: Recall that EADB was linked historically to the East African Community, and its legal basis was later updated under a new charter. Step 2: In many exam oriented sources, the year 1980 is highlighted as the year when the East African Development Bank came into force as an independent regional development finance institution. Step 3: Compare this with the other options. The year 1967 is related to earlier regional arrangements, but not the key charter coming into force that is usually asked in exams. Step 4: The years 1982 and 1983 do not match the standard reference year associated with the bank coming into force. Step 5: Therefore, among the given options, 1980 is the correct year.

Verification / Alternative check:
A useful verification method is to cross check this date with standard competitive examination compendiums on world organisations, where the East African Development Bank is often listed with the year 1980 as the year the bank came into force or was re established under its own charter. If multiple independent exam guides agree on a particular year, that year is most likely the intended answer for objective type questions. This cross checking habit is very helpful when preparing for general knowledge sections of exams.

Why Other Options Are Wrong:
1967: This year is associated with earlier East African regional cooperation, but it is not the year highlighted for EADB coming into force under its charter in exam oriented material.
1982: There is no standard reference that identifies 1982 as the year when the bank came into force, so it is a distractor option.
1983: This is also not the widely accepted year for EADB coming into force; it is included only to test date confusion.

Common Pitfalls:
A common mistake is to confuse the year of establishing a regional community with the year when a specialised financial institution under that community came into force. Another frequent error is to choose a date that sounds familiar, even when it is not linked to the specific institution in the question. Candidates should focus on learning one clearly associated year for each major international and regional institution and revising that list regularly before exams. Mixing up nearby years like 1980, 1982 and 1983 is another typical pitfall that can be avoided by repeated revision and using short memory tricks for key dates.

Final Answer:
The East African Development Bank came into force as a regional development finance institution in the year 1980.