Final Answer:
Miller & Lux holds significance in American Horizons due to its role as a prominent agricultural and land development company during the late 19th and early 20th centuries.
Step-by-step explanation:
The statement emphasizes the importance of Miller & Lux in the context of American Horizons. This signifies that Miller & Lux played a notable role within a specific historical or contextual framework. The mention of Miller & Lux as a significant entity points to its key role as an agricultural and land development company. This implies that Miller & Lux had a substantial impact on shaping agricultural and land-related activities during the specified time period. The timeframe specified, late 19th to early 20th centuries, provides historical context. Miller & Lux's significance is situated within this time span, suggesting its influence during a crucial period of American history.