What if the sea route to India had gone differently?

Vasco da Gama rounds Africa and reaches India by sea, breaking the overland spice monopoly.

If it had gone differently: Europe's trade with Asia stays overland and heavily taxed; the seaborne empires of the Dutch and English have no template.

1. 1500The Columbian Exchange, No potatoes or maize in the Old World; European populations stay smaller and hungrier.
2. 1525The Atlantic slave trade scales up, The plantation economy never finds its labour force; Atlantic colonies stay marginal.
3. 1600The chartered East India companies, European trade with Asia stays a matter of small merchant convoys; no company-states, no gunboat empires.