Which happened earlier: Aswan Low Dam completed or Hoover Dam completed?

Question 1

Which happened earlier?

A Aswan Low Dam completed ✓ Earlier

B Hoover Dam completed

Aswan Low Dam completed (10 December 1902) came before Hoover Dam completed (1 March 1936)

Question 2

Which happened earlier?

A Kariba Dam completed

B Grand Coulee Dam completed ✓ Earlier

Grand Coulee Dam completed (1 June 1942) came before Kariba Dam completed (1 December 1959)

Question 3

Which happened earlier?

A Glen Canyon Dam completed ✓ Earlier

B Three Gorges Dam begins operation

Glen Canyon Dam completed (13 September 1964) came before Three Gorges Dam begins operation (10 July 2003)

Earlier #148