Arrange the following events in the chronological order of their introduction or formulation:
- The Rank-Size Rule by G.K. Zipf
- The Concentric Zone Model by E.W. Burgess
- The Sector Model by Homer Hoyt
- The Multiple-Nuclei Model by Harris and Ullman
1
1, 2, 3, 4
2
2, 3, 4, 1
3
2, 1, 4, 3
4
3, 2, 1, 4