Chess Opening Theory/1. d4/1...g6/2. c4

= Queen's Pawn: Modern =

2. c4
Playing the standard Queen's pawn formation controlling the center.

Black's options are still many, but likely to be a King's Indian or Grunfeld Defence, but possible is a transposition into the Dutch Defense.

Theory table
.

'''1. d4 g6 2. c4'''