The word trazaban is the imperfect form of trazar in the third person plural.
See the full trazar conjugation

trazar

Por una parte, los ministerios industriales trazaban planes para satisfacer las necesidades de las distintas ramas de la producción.
You had industrial ministries drawing up plans to meet the needs and requirements of particular branches of production.
Para tres de los cinco países examinados no se establecían objetivos mensurables, y para los dos países restantes se trazaban solo unos pocos.
For three of the countries examined there were no measurable targets, and for two there were only a few measurable targets.
De ahí, 25 personas se echaban al suelo y yacían inmóviles durante 10 minutos mientras otros trazaban perfiles con tiza en el suelo.
This was followed by 25 more people falling to the ground and lying motionless for 10 minutes as others drew chalk outlines on the street.
Para tres de los cinco países examinados no se establecían objetivos mensurables, y para los dos países restantes se trazaban solo unos pocos.
For three out of five countries examined there were no measurable targets and for the remaining two countries there were only a few measurable targets.
Cuando anteriores Comisiones presentaron los llamados «paquetes Delors I y II», en paralelo a los ambiciosos objetivos que se trazaban, se dotaba a la Comunidad de los medios necesarios para afrontar el cumplimiento de sus legítimas ambiciones.
When earlier Commissions presented the so-called 'Delors I and II packages', in parallel with the ambitious objectives which were outlined, the Community was given the necessary resources to realize its legitimate ambitions.
El 11 de septiembre de 2001, el Consejo de Ministros aprobó un plan en que se trazaban posibles medidas de lucha contra el terrorismo en Bosnia y Herzegovina.
On 11 September 2001, the Council of Ministers adopted a plan outlining measures to be considered in combating terrorism in Bosnia and Herzegovina.
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