Year of double-digit Epic
Rule. First two words express the number of the year of double-digit.
1948→ 48 →4 (4 letters) 8 (8 letters)
GATT(4) approval(8).
They(4) progress(8), Burma gains its independence.
Kill(4) greatest(8) Mahatma Gandhi.
Open(4) Olympics(8) in St. Moritz, Switzerland.
They(4) progress(8). Ceylon (now Sri Lanka) becomes an independent.
East(4) armament(8), Communist Party seizes Czechoslovakia.
Sign(4) Marshall(8) Plan by Harry S. Truman.
They(4) expelled(8) , Palestinian exodus.
Both(4) military (8),Arab–Israeli War:
Each(4) hardship (8).The Berlin Blockade begins.
Each(4) goodwill (8), WHO.
Open(4) Olympics(8) in London.
Cold(4) hardship(8), Ashgabat earthquake kills 110,000.
Keep(4) humanity(8), Universal Declaration of Human Rights
If you try to make this, "number of letters" is on the Internet with the word "cross word".