Several decades after the Partitions of Poland by Russia, Prussia and Austria, the railway line Vilna-Luninets-Rivne extended to Łachwa, helping local economies withstand the downturn.

[3] After the formation of Second Polish Republic in the aftermath of World War I in 1918, Łachwa became part of the Polesie Voivodeship in the Eastern Borderlands area of Poland.

[5] On 1 April 1942, the town's Jewish residents were forcibly moved into a new ghetto consisting of two streets and 45 houses, and surrounded by a barbed wire fence.

[6][7] The ghetto housed roughly 2,350 people, which amounted to approximately 1 square metre (11 sq ft) per person.

With the assistance of Judenrat, the underground managed to stockpile axes, knives, and iron bars, although efforts to secure firearms were largely unsuccessful.

[5][6][7] By August 1942, the Jews in Łachwa knew that the nearby ghettos in Łuniniec (Luninets) and Mikaszewicze (now Mikashevichy, Belarus) had been liquidated.

On 2 September 1942, the local populace was informed that some farmers, summoned by the Nazis, had been ordered to dig large pits just outside the town.

Rochczyn and the underground wanted to attack the ghetto fence at midnight to allow the population to flee, but others refused to abandon the elderly and children.

Since the dissolution of the Soviet Union in 1991, Lakhva has been one of the smaller towns in the Luninets district of Brest Region in sovereign Belarus.